A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could cause applications utilizing GLib for string conversion to crash or become unstable.

A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation can lead to memory corruption.
By processing specially crafted and extremely large Unicode strings, an attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could cause applications utilizing GLib for string conversion to crash or become unstable.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

According to the versions of the glib2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to     incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries.
    This can cause memory writes outside the allocated buffer. Applications that process untrusted or     extremely large Base64 input using GLib may crash or behave unpredictably.(CVE-2026-1484)

    A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because     the length of a header line is stored in a signed integer, which can lead to integer wraparound for very     large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a     local user to install or process a specially crafted treemagic file, which can lead to local denial of     service or application instability.(CVE-2026-1485)

    A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation     can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an     attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could     cause applications utilizing GLib for string conversion to crash or become unstable.(CVE-2026-1489)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization glib2 security advisory.

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

According to the versions of the glib2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation     can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an     attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could     cause applications utilizing GLib for string conversion to crash or become unstable.(CVE-2026-1489)

    A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to     incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries.
    This can cause memory writes outside the allocated buffer. Applications that process untrusted or     extremely large Base64 input using GLib may crash or behave unpredictably.(CVE-2026-1484)

    A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because     the length of a header line is stored in a signed integer, which can lead to integer wraparound for very     large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a     local user to install or process a specially crafted treemagic file, which can lead to local denial of     service or application instability.(CVE-2026-1485)

    A flaw was found in GLib (Gnome Lib). This vulnerability allows a remote attacker to cause heap     corruption, leading to a denial of service or potential code execution via a buffer-underflow in the     GVariant parser when processing maliciously crafted input strings.(CVE-2025-14087)

    A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via     an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing     malicious file or remote filesystem attribute values.(CVE-2025-14512)

    A flaw was found in glib. Missing validation of offset and count parameters in the     g_buffered_input_stream_peek() function can lead to an integer overflow during length calculation. When     specially crafted values are provided, this overflow results in an incorrect size being passed to     memcpy(), triggering a buffer overflow. This can cause application crashes, leading to a Denial of Service     (DoS).(CVE-2026-0988)

    A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in     the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable     characters (which would need escaping), the calculation of the length of the escaped string could     overflow, leading to a potential write off the end of the newly allocated string.(CVE-2025-13601)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization glib2 security advisory.

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

According to the versions of the glib2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because     the length of a header line is stored in a signed integer, which can lead to integer wraparound for very     large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a     local user to install or process a specially crafted treemagic file, which can lead to local denial of     service or application instability.(CVE-2026-1485)

    A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation     can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an     attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could     cause applications utilizing GLib for string conversion to crash or become unstable.(CVE-2026-1489)

    A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to     incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries.
    This can cause memory writes outside the allocated buffer. Applications that process untrusted or     extremely large Base64 input using GLib may crash or behave unpredictably.(CVE-2026-1484)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization glib2 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 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0277 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-1489:
    A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation     can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an     attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could     cause applications utilizing GLib for string conversion to crash or become unstable.

    CVE-2026-1485:
    A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because     the length of a header line is stored in a signed integer, which can lead to integer wraparound for very     large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a     local user to install or process a specially crafted treemagic file, which can lead to local denial of     service or application instability.

    CVE-2026-1484:
    A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to     incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries.
    This can cause memory writes outside the allocated buffer. Applications that process untrusted or     extremely large Base64 input using GLib may crash or behave unpredictably.

Tenable has extracted the preceding description block directly from the Tencent 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 Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4491 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4491-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                   Andreas Henriksson     February 23, 2026                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : glib2.0     Version        : 2.66.8-1+deb11u8     CVE ID         : CVE-2026-0988 CVE-2026-1484 CVE-2026-1485 CVE-2026-1489     Debian Bug     : 1125752 1126549 1126550 1126551

    Multiple issues were found in GLib, a general-purpose, portable utility     library, that could lead to denial of service, memory corruption or     potentially arbitrary code execution if maliciously crafted data is     processed.

    CVE-2026-0988

        Codean Labs found missing validation of offset and count parameters in the         g_buffered_input_stream_peek() function can lead to an integer overflow         during length calculation. When specially crafted values are provided, this         overflow results in an incorrect size being passed to memcpy(), triggering         a buffer overflow. This can cause application crashes, leading to a Denial         of Service (DoS).

    CVE-2026-1484

        treeplus with additional thanks to Sovereign Tech Resilience program of the         Sovereign Tech Agency found in the GLib Base64 encoding routine when         processing very large input data. Due to incorrect use of integer types         during length calculation, the library may miscalculate buffer boundaries.
        This can cause memory writes outside the allocated buffer. Applications         that process untrusted or extremely large Base64 input using GLib may crash         or behave unpredictably.

    CVE-2026-1485

        treeplus with additonal thanks to Sovereign Tech Resilience program of the         Sovereign Tech Agency found a flaw in Glib's content type parsing logic.
        This buffer underflow vulnerability occurs because the length of a header         line is stored in a signed integer, which can lead to integer wraparound         for very large inputs. This results in pointer underflow and out-of-bounds         memory access. Exploitation requires a local user to install or         process a specially crafted treemagic file, which can lead to local         denial of service or application instability.

    CVE-2026-1489

        treeplus with additional thanks to Sovereign Tech Resilience program of the         Sovereign Tech Agency found a flaw n GLib. An integer overflow         vulnerability in its Unicode case conversion implementation can lead to         memory corruption. By processing specially crafted and extremely large         Unicode strings, an attacker could trigger an undersized memory allocation,         resulting in out-of-bounds writes. This could cause applications utilizing         GLib for string conversion to crash or become unstable.

    For Debian 11 bullseye, these problems have been fixed in version     2.66.8-1+deb11u8.

    We recommend that you upgrade your glib2.0 packages.

    For the detailed security status of glib2.0 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/glib2.0

    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     Attachment:
    signature.asc     Description: PGP signature

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 remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2c53d4d272 advisory.

    Backport fixes for CVE-2026-1484, CVE-2026-1485, CVE-2026-1489.

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-607c3364fd advisory.

    Backport fixes for CVE-2026-1484, CVE-2026-1485, CVE-2026-1489.

Tenable has extracted the preceding description block directly from the Fedora 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 Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8017-1 advisory.

    It was discovered that GLib incorrectly parsed large Base64 data. An attacker could use this issue to     cause GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-1484)

    It was discovered that GLib incorrectly parsed certain treemagic files. An attacker could use this issue     to cause GLib to crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2026-1485)

    It was discovered that GLib incorrectly handled Unicode case conversion. An attacker could use this issue     to cause GLib to crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2026-1489)

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 SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:20221-1 advisory.

    - CVE-2026-1485: Fixed buffer underflow and out-of-bounds access due to integer wraparound in content type     parsing (bsc#1257354).
    - CVE-2026-1484: Fixed buffer underflow and out-of-bounds access due to miscalculated buffer boundaries in     the Base64 encoding routine (bsc#1257355).
    - CVE-2026-1489: Fixed undersized heap allocation followed by out-of-bounds access due to integer overflow     in Unicode case conversion (bsc#1257353).
    - CVE-2026-0988: Fixed a potential integer overflow in g_buffered_input_stream_peek (bsc#1257049).

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 remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0373-1 advisory.

    - CVE-2026-1485: Fixed buffer underflow and out-of-bounds access due to integer wraparound in content type     parsing (bsc#1257354).
    - CVE-2026-1484: Fixed buffer underflow and out-of-bounds access due to miscalculated buffer boundaries in     the Base64 encoding routine (bsc#1257355).
    - CVE-2026-1489: Fixed undersized heap allocation followed by out-of-bounds access due to integer overflow     in Unicode case conversion (bsc#1257353).

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 remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0372-1 advisory.

    - CVE-2026-1485: Fixed buffer underflow and out-of-bounds access due to integer wraparound in content type     parsing (bsc#1257354).
    - CVE-2026-1484: Fixed buffer underflow and out-of-bounds access due to miscalculated buffer boundaries in     the Base64 encoding routine (bsc#1257355).
    - CVE-2026-1489: Fixed undersized heap allocation followed by out-of-bounds access due to integer overflow     in Unicode case conversion (bsc#1257353).

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 remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20150-1 advisory.

    - CVE-2026-1485: Fixed buffer underflow and out-of-bounds access due to integer wraparound in content type     parsing (bsc#1257354).
    - CVE-2026-1484: Fixed buffer underflow and out-of-bounds access due to miscalculated buffer boundaries in     the Base64 encoding routine (bsc#1257355).
    - CVE-2026-1489: Fixed undersized heap allocation followed by out-of-bounds access due to integer overflow     in Unicode case conversion (bsc#1257353).
    - CVE-2026-0988: Fixed a potential integer overflow in g_buffered_input_stream_peek (bsc#1257049).

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

  - A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation     can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an     attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could     cause applications utilizing GLib for string conversion to crash or become unstable. (CVE-2026-1489)

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

ID	Name	Product	Family	Severity
505386	Siemens RUGGEDCOM RST2428P Out-of-bounds Write (CVE-2026-1489)	Tenable OT Security	Tenable.ot	medium
319473	EulerOS Virtualization 2.10.1 : glib2 (EulerOS-SA-2026-2019)	Nessus	Huawei Local Security Checks	medium
319441	EulerOS Virtualization 2.13.1 : glib2 (EulerOS-SA-2026-2126)	Nessus	Huawei Local Security Checks	critical
319408	EulerOS Virtualization 2.10.0 : glib2 (EulerOS-SA-2026-2046)	Nessus	Huawei Local Security Checks	medium
319400	EulerOS Virtualization 2.13.0 : glib2 (EulerOS-SA-2026-2165)	Nessus	Huawei Local Security Checks	critical
319333	EulerOS Virtualization 2.12.0 : glib2 (EulerOS-SA-2026-2099)	Nessus	Huawei Local Security Checks	medium
319315	EulerOS Virtualization 2.12.1 : glib2 (EulerOS-SA-2026-2074)	Nessus	Huawei Local Security Checks	medium
314505	TencentOS Server 4: glib2 (TSSA-2026:0277)	Nessus	Tencent Local Security Checks	medium
299773	Debian dla-4491 : libglib2.0-0 - security update	Nessus	Debian Local Security Checks	medium
298314	Fedora 42 : mingw-glib2 (2026-2c53d4d272)	Nessus	Fedora Local Security Checks	medium
298309	Fedora 43 : mingw-glib2 (2026-607c3364fd)	Nessus	Fedora Local Security Checks	medium
298268	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : GLib vulnerabilities (USN-8017-1)	Nessus	Ubuntu Local Security Checks	medium
298230	SUSE SLES16 Security Update : glib2 (SUSE-SU-2026:20221-1)	Nessus	SuSE Local Security Checks	medium
297979	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : glib2 (SUSE-SU-2026:0373-1)	Nessus	SuSE Local Security Checks	low
297971	SUSE SLES12 Security Update : glib2 (SUSE-SU-2026:0372-1)	Nessus	SuSE Local Security Checks	low
297785	openSUSE 16 Security Update : glib2 (openSUSE-SU-2026:20150-1)	Nessus	SuSE Local Security Checks	low
296897	Linux Distros Unpatched Vulnerability : CVE-2026-1489	Nessus	Misc.	medium

Detections

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CVE-2026-1489

medium

Tenable Plugins

medium

medium

critical

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critical

medium

medium

medium

medium

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low

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medium