LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:46386 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * LibreOffice: LibreOffice: Denial of Service via crafted OOXML documents (CVE-2026-4430)

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:46387 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:43461 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:43423 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:43460 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:43425 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:43424 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3140-1 advisory.

    Update to LibreOffice 26.2.5.1.

    Security issues fixed:

    - CVE-2026-4430: out-of-bounds write via crafted OOXML documents with mismatched encryption salt     parameters       (bsc#1264357).
    - CVE-2026-6039: denial of service via specially crafted DXF polyline import (bsc#1268494).
    - CVE-2026-6040: heap use-after-free when importing the blank-width characters of an ODF number format     (bsc#1268527).
    - CVE-2026-6045: heap buffer overflow via crafted EMF+ graphics import (bsc#1268497).
    - CVE-2026-6047: denial of service via heap buffer overflow in OOXML document processing (bsc#1268504).
    - CVE-2026-8356: denial of service via a specially crafted PPT file (bsc#1268522).
    - CVE-2026-8357: heap buffer overflow in Calc formula compilation (bsc#1268528).
    - CVE-2026-8358: heap buffer overflow in spreadsheet tracked-changes import (bsc#1268529).
    - CVE-2026-50593: graphite2: out-of-bounds write via Graphite actions (bsc#1267735).

    Other updates and bugfixes:

    - Update to LibreOffice 26.2.5.1.
      - Update bundled dependencies:
        * `fontconfig` 2.17.1 -> 2.18.0
        * `graphite2-minimal` 1.3.14 -> 1.3.15
        * `libcmis` 0.6.2 -> 0.6.3
        * `libgpg-error` 1.59 -> 1.61
        * `lxml` 6.1.0 -> 6.1.1
        * `md4c` 0.5.2 -> 0.5.3
        * `poppler` 26.04.0 -> 26.06.0
        * `sqlite-amalgamation` 3530000 -> 3530100
        * `xmlsec1` 1.3.9 -> 1.3.11
    - Update to LibreOffice 26.2.3.2 (PED-16098).
      - Upgraded dependencies:
        * `boost`: 1_88_0 -> 1_89_0
        * `freetype`: 2.14.1 -> 2.14.3
        * `harfbuzz`: 12.3.0 -> 12.3.2
        * `icu4c`: 77_1 -> 78.3
        * `libgpg-error`: 1.56 -> 1.59
        * `liborcus`: 0.20.1 -> 0.21.0
        * `pdfium`: 7012 -> 7471
        * `poppler`: 25.12.0 -> 26.04.0
        * `skia`: m136 -> m142
      - New bundled sources:
        * `afdko` 4.0.3
        * `antlr4-cpp-runtime` 4.13.2
        * `fast_float` 8.2.2
        * `libffi` 3.5.2
        * `lxml` 6.1.0
        * `md4c` 0.5.2
        * `meson` 1.8.3
        * `Python` 3.12.13
        * `sqlite` 3530000
        * `xmlsec1` 1.3.9
        * `xz` 5.8.3
    - Add `patch`, required to build the bundled Python on all architectures.
    - Bundling a specific Python is now required as the one we ship (3.6) is too old to build `harfbuzz`.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0633 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2026-8357:
    LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when     compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was     allocated one element too small for that worst case, so such a formula wrote one element past its end. In     fixed versions the array is sized to hold the largest possible nesting.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:36832 advisory.

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-35839 advisory.

    - Fix CVE-2026-8357 buffer overflow in Calc formula compiler with       formulas composed entirely of open tokens

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2026:0194 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2026-8357:
    LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when     compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was     allocated one element too small for that worst case, so such a formula wrote one element past its end. In     fixed versions the array is sized to hold the largest possible nesting.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-36832 advisory.

    - Fix CVE-2026-8357 Arbitrary code execution via heap buffer overflow in       formula compilation

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8534-1 advisory.

    It was discovered that LibreOffice incorrectly handled importing DXF drawings. An attacker could use this     issue to cause LibreOffice to crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2026-6039)

    It was discovered that LibreOffice incorrectly handled certain ODF number formats. An attacker could use     this issue to cause LibreOffice to crash, resulting in a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-6040)

    It was discovered that LibreOffice incorrectly handled importing EMF+ graphics. An attacker could use this     issue to cause LibreOffice to crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2026-6045)

    It was discovered that LibreOffice incorrectly handled importing PPT presentations. An attacker could use     this issue to cause LibreOffice to crash, resulting in a denial of service, or possibly execute arbitrary     code. (CVE-2026-8356)

    It was discovered that LibreOffice Calc incorrectly handled compiling certain formulas. An attacker could     use this issue to cause LibreOffice to crash, resulting in a denial of service, or possily execute     arbitrary code. (CVE-2026-8357)

    It was discovered that LibreOffice Calc incorrectly handled importing spreadsheet tracked changes. An     attacker could use this issue to cause LibreOffice to crash, resulting in a denial of service, or possibly     execute arbitrary code. (CVE-2026-8358)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1254:02 advisory.

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:36832 advisory.

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:36832 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:35839 advisory.

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:35839 advisory.

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:35839 advisory.

    LibreOffice is an open source, community-developed office productivity suite. It includes key desktop     applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a     drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office     suite.

    Security Fix(es):

    * libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation     (CVE-2026-8357)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4633 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4633-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Rene Engelhard     June 17, 2026                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : libreoffice     Version        : 4:7.4.7-1+deb12u13     CVE ID         : CVE-2026-6039 CVE-2026-6045 CVE-2026-8356 CVE-2026-8357                      CVE-2026-8358

    Multiple security vulnerabilities were discovered in LibreOffice,     which could result in denial of service or potentially the execution     of arbitrary code if malformed files are opened.

    For Debian 12 bookworm, these problems have been fixed in version     4:7.4.7-1+deb12u13.

    We recommend that you upgrade your libreoffice packages.

    For the detailed security status of libreoffice please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libreoffice

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when     compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was     allocated one element too small for that worst case, so such a formula wrote one element past its end. In     fixed versions the array is sized to hold the largest possible nesting. (CVE-2026-8357)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6346 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6346-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     June 15, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : libreoffice     CVE ID         : CVE-2026-6039 CVE-2026-6040 CVE-2026-6045 CVE-2026-8356                      CVE-2026-8357 CVE-2026-8358

    Multiple security vulnerabilities were discovered in LibreOffice, which     could result in denial of service or potentially the execution of     arbitrary code if malformed files are opened.

    For the stable distribution (trixie), these problems have been fixed in     version 4:25.2.3-2+deb13u5.

    We recommend that you upgrade your libreoffice packages.

    For the detailed security status of libreoffice please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libreoffice

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
330102	RHEL 7 : libreoffice (RHSA-2026:46386)	Nessus	Red Hat Local Security Checks	medium
330058	RHEL 8 : libreoffice (RHSA-2026:46387)	Nessus	Red Hat Local Security Checks	medium
329067	RHEL 8 : libreoffice (RHSA-2026:43461)	Nessus	Red Hat Local Security Checks	medium
329062	RHEL 9 : libreoffice (RHSA-2026:43423)	Nessus	Red Hat Local Security Checks	medium
329059	RHEL 8 : libreoffice (RHSA-2026:43460)	Nessus	Red Hat Local Security Checks	medium
328951	RHEL 9 : libreoffice (RHSA-2026:43425)	Nessus	Red Hat Local Security Checks	medium
328947	RHEL 9 : libreoffice (RHSA-2026:43424)	Nessus	Red Hat Local Security Checks	medium
328909	SUSE SLED15: libreoffice / libreoffice-base / libreoffice-base-drivers-firebird / etc (SUSE-SU-2026:3140-1)	Nessus	SuSE Local Security Checks	medium
328385	TencentOS Server 3: libreoffice (TSSA-2026:0633)	Nessus	Tencent Local Security Checks	medium
327428	AlmaLinux 9 : libreoffice (ALSA-2026:36832)	Nessus	Alma Linux Local Security Checks	medium
327349	Oracle Linux 8 : libreoffice (ELSA-2026-35839)	Nessus	Oracle Linux Local Security Checks	medium
327263	Alibaba Cloud Linux 3 : 0194: libreoffice (ALINUX3-SA-2026:0194)	Nessus	Alibaba Cloud Linux Local Security Checks	medium
327069	Oracle Linux 9 : libreoffice (ELSA-2026-36832)	Nessus	Oracle Linux Local Security Checks	medium
326801	Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : LibreOffice vulnerabilities (USN-8534-1)	Nessus	Ubuntu Local Security Checks	medium
326717	MiracleLinux 8 : libreoffice-6.4.7.2-21.el8_10.ML.1 (AXSA:2026-1254:02)	Nessus	Miracle Linux Local Security Checks	medium
326263	RockyLinux 9 : libreoffice (RLSA-2026:36832)	Nessus	Rocky Linux Local Security Checks	medium
325804	RHEL 9 : libreoffice (RHSA-2026:36832)	Nessus	Red Hat Local Security Checks	medium
325503	AlmaLinux 8 : libreoffice (ALSA-2026:35839)	Nessus	Alma Linux Local Security Checks	medium
325361	RockyLinux 8 : libreoffice (RLSA-2026:35839)	Nessus	Rocky Linux Local Security Checks	medium
325206	RHEL 8 : libreoffice (RHSA-2026:35839)	Nessus	Red Hat Local Security Checks	medium
321496	Debian dla-4633 : fonts-opensymbol - security update	Nessus	Debian Local Security Checks	medium
321143	Linux Distros Unpatched Vulnerability : CVE-2026-8357	Nessus	Misc.	medium
321128	Debian dsa-6346 : fonts-opensymbol - security update	Nessus	Debian Local Security Checks	medium

Detections

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