The remote Oracle Linux 8 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-6445 advisory.

    [1.2.57-6]
    - fix CVE-2026-25646: heap buffer overflow in png_set_quantize (RHEL-148339)

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 Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:7036 advisory.

    The libpng12 package provides libpng 1.2, which is the previous version of the libpng library for     manipulating PNG (Portable Network Graphics) image format files. This version should be used in case that     it is not possible to use the current version of libpng.

    Security Fix(es):

    * libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646)

    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 RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:6439 advisory.

    * libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646)

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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-0192882589 advisory.

    fix CVE-2026-25646: heap buffer overflow in png_set_quantize

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 Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2026:0075 advisory.

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

    CVE-2026-25646:
    LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable     Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the     png_set_quantize() API function. When the function is called with no histogram and the number of colors in     the palette is more than twice the maximum supported by the user's display, certain palettes will cause     the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer.
    The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is     fixed in 1.6.55.

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 Redhat Enterprise Linux 7 / 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:9254 advisory.

    The java-11-openjdk packages provide the OpenJDK 11 Java Runtime Environment and the OpenJDK 11 Java     Software Development Kit.

    This release contains OpenJDK 11 with Extended Lifecycle Support for Red Hat Enterprise Linux versions 7,     8, and 9.

    Security Fix(es):

    * JDK: LIBPNG: out-of-bounds read in png_image_read_composite (CVE-2025-66293)
    * JDK: LIBPNG: Information disclosure and denial of service via integer truncation in simplified write API     (CVE-2026-22801)
    * JDK: LIBPNG: has a heap buffer overflow in png_set_quantize (CVE-2026-25646)
    * JDK: GIFLIB: Denial of Service via buffer overflow in EGifGCBToExtension (CVE-2026-26740)
    * JDK: LIBPNG: Arbitrary code execution due to use-after-free vulnerability (CVE-2026-33416)
    * JDK: LIBPNG: Information disclosure and denial of service via out-of-bounds read/write in Neon palette     expansion (CVE-2026-33636)
    * JDK: Denial of service and information disclosure via heap buffer over-read in png_image_finish_read     (CVE-2026-22695)

    * JDK: (CVE-2026-22007)
    * JDK: (CVE-2026-22016)
    * JDK: (CVE-2026-22013)
    * JDK: (CVE-2026-22018)
    * JDK: (CVE-2026-22021)
    * JDK: (CVE-2026-34268)
    * JDK: (CVE-2026-34282)
    * JDK: (CVE-2026-23865)

    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 Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3adf4e38cb advisory.

    fix CVE-2026-25646: heap buffer overflow in png_set_quantize

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 version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0259 advisory.

    Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

    CVE-2026-25646:
    LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable     Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the     png_set_quantize() API function. When the function is called with no histogram and the number of colors in     the palette is more than twice the maximum supported by the user's display, certain palettes will cause     the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer.
    The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is     fixed in 1.6.55.

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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021494 advisory.

    LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable     Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the     png_set_quantize() API function. When the function is called with no histogram and the number of colors in     the palette is more than twice the maximum supported by the user's display, certain palettes will cause     the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer.
    The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is     fixed in 1.6.55.

Tenable has extracted the preceding description block directly from the Unity 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 SLES12 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:2878-1 advisory.

    This update for libpng15 fixes the following issue

    - CVE-2026-25646: heap buffer overflow vulnerability in png_set_dither/png_set_quantize (bsc#1258020).

Tenable has extracted the preceding description block directly from the SUSE 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 SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:3039-1 advisory.

    This update for libpng12 fixes the following issue

    - CVE-2026-25646: Heap buffer overflow vulnerability in png_set_dither/png_set_quantize (bsc#1258020).

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

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

An update of the libpng package has been released.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
304867	Oracle Linux 8 : libpng12 (ELSA-2026-6445)	Nessus	Oracle Linux Local Security Checks	2026/4/4	2026/4/4	high
305575	RHEL 8 : libpng12 (RHSA-2026:7036)	Nessus	Red Hat Local Security Checks	2026/4/8	2026/4/8	high
305664	RockyLinux 8 : libpng15 (RLSA-2026:6439)	Nessus	Rocky Linux Local Security Checks	2026/4/9	2026/4/9	high
307054	Fedora 43 : libpng12 (2026-0192882589)	Nessus	Fedora Local Security Checks	2026/4/17	2026/4/17	high
307692	Alibaba Cloud Linux 3 : 0075: libpng12 (ALINUX3-SA-2026:0075)	Nessus	Alibaba Cloud Linux Local Security Checks	2026/4/21	2026/4/21	high
309659	RHEL 7 / 8 / 9 : Java 11 OpenJDK ELS Security Update (Important) (RHSA-2026:9254)	Nessus	Red Hat Local Security Checks	2026/4/22	2026/4/22	high
310701	Fedora 44 : libpng12 (2026-3adf4e38cb)	Nessus	Fedora Local Security Checks	2026/4/28	2026/4/28	high
310933	TencentOS Server 2: libpng12 (TSSA-2026:0259)	Nessus	Tencent Local Security Checks	2026/4/29	2026/4/29	high
315179	Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: libpng (UTSA-2026-021494)	Nessus	Unity Linux Local Security Checks	2026/5/18	2026/5/18	high
326690	SUSE SLES12 Security Update : libpng15 (SUSE-SU-2026:2878-1)	Nessus	SuSE Local Security Checks	2026/7/14	2026/7/14	high
327280	SUSE SLES12: libpng12-0 / libpng12-0-32bit / libpng12-compat-devel / etc (SUSE-SU-2026:3039-1)	Nessus	SuSE Local Security Checks	2026/7/16	2026/7/16	high
332655	Photon OS 5.0: Libpng PHSA-2026-5.0-90-0764	Nessus	PhotonOS Local Security Checks	2026/8/5	2026/8/5	high

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