A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

The version of LibRaw installed on the remote host is prior to 0.19.4-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3255 advisory.

    A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit     d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a     malicious file to trigger this vulnerability. (CVE-2026-20889)

    A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw     Commit 0b56545 and Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow.
    An attacker can provide a malicious file to trigger this vulnerability. (CVE-2026-21413)

Tenable has extracted the preceding description block directly from the tested product 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 SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1556-1 advisory.

    - CVE-2026-5342: out-of-bounds read via `LibRaw::nikon_load_padded_packed_raw` (bsc#1261499).
    - CVE-2026-20884: integer overflow and heap buffer overflow via `deflate_dng_load_raw` (bsc#1261671).
    - CVE-2026-20889: heap-based buffer overflow in `x3f_thumb_loader`(bsc#1261672).
    - CVE-2026-20911: heap-based buffer overflow in `HuffTable::initval`(bsc#1261673).
    - CVE-2026-21413: heap-based buffer overflow in `lossless_jpeg_load_raw` (bsc#1261674).
    - CVE-2026-24660: heap-based buffer overflow in `x3f_load_huffman` (bsc#1261676).

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 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1555-1 advisory.

    - CVE-2026-5342: out-of-bounds read via `LibRaw::nikon_load_padded_packed_raw` (bsc#1261499).
    - CVE-2026-20884: integer overflow and heap buffer overflow via `deflate_dng_load_raw` (bsc#1261671).
    - CVE-2026-20889: heap-based buffer overflow in `x3f_thumb_loader`(bsc#1261672).
    - CVE-2026-20911: heap-based buffer overflow in `HuffTable::initval`(bsc#1261673).
    - CVE-2026-21413: heap-based buffer overflow in `lossless_jpeg_load_raw` (bsc#1261674).
    - CVE-2026-24450: integer overflow and heap buffer overflow via `uncompressed_fp_dng_load_raw`     (bsc#1261675).
    - CVE-2026-24660: heap-based buffer overflow in `x3f_load_huffman` (bsc#1261676).

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-2026:20574-1 advisory.

    - CVE-2026-5342: crafted TIFF/NEF file can cause an out-of-bounds read (bsc#1261499).
    - CVE-2026-20884: integer overflow vulnerability in the deflate_dng_load_raw (bsc#1261671).
    - CVE-2026-20889: heap-based buffer overflow vulnerability in the x3f_thumb_loader (bsc#1261672).
    - CVE-2026-20911: heap-based buffer overflow vulnerability in the HuffTable: initval (bsc#1261673).
    - CVE-2026-21413: heap-based buffer overflow vulnerability in the lossless_jpeg_load_raw (bsc#1261674).
    - CVE-2026-24450: integer overflow vulnerability in uncompressed_fp_dng_load_raw (bsc#1261675).
    - CVE-2026-24660: heap-based buffer overflow vulnerability in the x3f_load_huffman (bsc#1261676).

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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-635a001215 advisory.

    Backport patch for CVE-2026-20884.

    ----

    Backport fixes for CVE-2026-20889 CVE-2026-21413 CVE-2026-24450 CVE-2026-24660

    ----

    Update to libraw-0.21.5.

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 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-826db1b5c0 advisory.

    Backport patch for CVE-2026-20884.

    ----

    Backport fixes for CVE-2026-20889 CVE-2026-21413 CVE-2026-24450 CVE-2026-24660

    ----

    Update to libraw-0.21.5.

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

  - A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit     d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a     malicious file to trigger this vulnerability. (CVE-2026-20889)

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

ID	Name	Product	Family	Severity
311221	Amazon Linux 2 : LibRaw, --advisory ALAS2-2026-3255 (ALAS-2026-3255)	Nessus	Amazon Linux Local Security Checks	critical
310063	SUSE SLES15 Security Update : libraw (SUSE-SU-2026:1556-1)	Nessus	SuSE Local Security Checks	medium
310058	SUSE SLED15 / SLES15 Security Update : libraw (SUSE-SU-2026:1555-1)	Nessus	SuSE Local Security Checks	medium
309150	openSUSE 16 Security Update : libraw (openSUSE-SU-2026:20574-1)	Nessus	SuSE Local Security Checks	medium
307413	Fedora 43 : mingw-LibRaw (2026-635a001215)	Nessus	Fedora Local Security Checks	critical
307405	Fedora 42 : mingw-LibRaw (2026-826db1b5c0)	Nessus	Fedora Local Security Checks	critical
305263	Linux Distros Unpatched Vulnerability : CVE-2026-20889	Nessus	Misc.	critical

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CVE-2026-20889

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