A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:41892 advisory.

    * libtiff: TIFFRasterScanlineSize64 produce too-big size and could cause OOM (CVE-2023-52355)

    * libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912)

    Bug Fix(es) and Enhancement(s):

    * Reintroduce the `tiffcp -i` option (JIRA:Rocky Linux-185328)

Tenable has extracted the preceding description block directly from the RockyLinux 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 RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:42668 advisory.

    * libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912)

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 AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:42668 advisory.

    * libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912)

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 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-42668 advisory.

    [4.4.0-18.1]
    - fix CVE-2026-12912: heap-buffer-overflow in PixarLog 8BITABGR decode with stride 3 (RHEL-189387)

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 version of compat-libtiff3 installed on the remote host is prior to 3.9.4-12. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3822 advisory.

    A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially     crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the     PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer     overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
    (CVE-2026-12912)

Tenable has extracted the preceding description block directly from the tested product 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 version of libtiff installed on the remote host is prior to 4.0.3-35. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3823 advisory.

    A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially     crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the     PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer     overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
    (CVE-2026-12912)

Tenable has extracted the preceding description block directly from the tested product 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-2026:42668 advisory.

    The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF)     files.

    Security Fix(es):

    * libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912)

    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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1983 advisory.

    A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially     crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the     PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer     overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
    (CVE-2026-12912)

    Denial of Service via large SamplesPerPixel tag (CVE-2026-36849)

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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-feac063d56 advisory.

    updated to 4.7.2, fixes security issues

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 AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:41892 advisory.

    * libtiff: TIFFRasterScanlineSize64 produce too-big size and could cause OOM (CVE-2023-52355)
      * libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image     (CVE-2026-12912)


    Bug Fix(es) and Enhancement(s):

      * Reintroduce the `tiffcp -i` option (JIRA:AlmaLinux-185328)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-41892 advisory.

    - fix CVE-2026-12912: heap-buffer-overflow in PixarLog 8BITABGR decode with stride 3 (RHEL-189374)
    - make sure documentation is updated during build for CVE-2023-52355 (RHEL-178281)

Tenable has extracted the preceding description block directly from the Oracle 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 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6392 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6392-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     July 19, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : tiff     CVE ID         : CVE-2026-12912     Debian Bug     : 1141320

    A flaw was discovered in tiff, a Tag Image File Format library, which     may result in denial of service or the execution of arbitrary code if     malformed image files are processed.

    For the stable distribution (trixie), this problem has been fixed in     version 4.7.0-3+deb13u3.

    We recommend that you upgrade your tiff packages.

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

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:41892 advisory.

    The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF)     files.

    Security Fix(es):

    * libtiff: TIFFRasterScanlineSize64 produce too-big size and could cause OOM (CVE-2023-52355)

    * libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912)

    Bug Fix(es) and Enhancement(s):

    * Reintroduce the `tiffcp -i` option (JIRA:RHEL-185328)

    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-cfbf964c2e advisory.

    updated to 4.7.2, fixes security issues

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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3054-1 advisory.

    This update for tiff fixes the following issues

    - CVE-2026-12912: heap-based buffer overflow when processing crafted PixarLog-compressed TIFF image     (bsc#1269779).
    - CVE-2026-36849: denial of service when processing a a crafted TIFF file containing a large     SamplesPerPixel tag value       (bsc#1268434).

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-2026:3027-1 advisory.

    This update for tiff fixes the following issues

    - CVE-2026-12912: heap-based buffer overflow when processing crafted PixarLog-compressed TIFF image     (bsc#1269779).
    - CVE-2026-36849: denial of service when processing a a crafted TIFF file containing a large     SamplesPerPixel tag value       (bsc#1268434).

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-2026:2853-1 advisory.

    Update to version 4.7.2.

    Security issues fixed:

    - CVE-2026-12912: heap-based buffer overflow when processing crafted PixarLog-compressed TIFF image     (bsc#1269779).
    - CVE-2026-36849: denial of service when processing a a crafted TIFF file containing a large     SamplesPerPixel tag value       (bsc#1268434).

    Other updates and bugfixes:

    - Version 4.7.2:
      - Software configuration changes:
        * cmake: Fix bundle identifiers to use reverse-DNS format
        * cmake: Fix and improve Apple framework build support
        * cmake: Use TurboJPEG CONFIG by default (issue #767)
        * cmake: changes related to 8-/12-bit modes
        * cmake: Replace CMath::CMath with direct link to avoid export.
        * Support for iOS-derived builds
        * Simplify cmake byte order version check
        * Add additional warnings, primarily floating precision conversions and integer arithmetic conversions
        * configure.ac: Require bootstrap with at least Autoconf 2.71.
      - Library changes:
        * New/improved functionalities::
        - Add TIFFGetMaxCompressionRatio() and use it in _TIFFReadEncoded[Tile|Strip)AndAllocBuffer() (issue     #781)
      - Bug fixes:
        * Handle negative TIFFReadFile results before state updates (issue #854)
        * tif_dirread.c: fix copy-paste bug in ChopUpSingleUncompressedStrip
        * tif_read.c: Fixed division by zero in TIFFStartStrip() (issue #777)
        * tif_dirwrite.c: add integer overflow checks to allocation size calculations
        * tif_print.c: add integer overflow checks to allocation size calculations
        * tif_write.c: fix OOB read and underflow in TIFFAppendToStrip copy loop
        * DumpModeSeek: add bounds check to prevent OOB pointer advance
        * TIFFGrowStrips: fix use-after-free on partial realloc failure.
        * Fix NULL dereference in _TIFFReserveLargeEnoughWriteBuffer() by validating the strip bytecount array     before           accessing it.
        * TIFFRGBAImage: avoid int overflows in put functions (issue #830)
        * tif_getimage: fix inconsistent fromskew handling in put16bitbwtile (issue #792)
        * tif_getimage: Widen pointer-offset arithmetic in tif_getimage
        * putcontig8bitYCbCr44tile: fix wrong fromskew computation (issue #798)
        * putcontig8bitYCbCr42tile: Reject invalid YCbCr subsampling when image dimensions are smaller than     the subsampling           block to prevent out-of-bounds writes. (issue #753)
        * TIFFReadRGBAImage(): prevent integer overflow and later heap overflow (issue #787)
        * TIFFFillStrip/Tile(): avoid excessive memory allocation (issue #831)
        * TIFFLinkDirectory() checks for IFD loops (issue #788)
        * Check result of _TIFFCheckRealloc to prevent memory leaks and segmentation fault when reallocation     fails.
        * TIFFVTileSize64(): in YCbCr contig non upsampled mode, validate td_samplesperpixel==3 (issue #805)
        * TIFFReadDirEntryPersampleShort(): be tolerant to tags like SampleFormat not having 1 or     SamplesPerPixel values           (https://github.com/OSGeo/gdal/issues/13465)
        * tif_getimage: reject tile widths that would overflow toskew (issue #808)
        * Fix integer overflow in _TIFFPartialReadStripArray on 32-bit.
        * TIFFAppendToStrip(): add some checks to avoid null-pointer-dereferencing (issue #777).
        * _TIFFGetStrileOffsetOrByteCountValue(): fix potential crash on corrupted files when file opened in     'O' mode           (https://issues.oss-fuzz.com/issues/471328917)
        * TIFFReadDirectory(): re-set TIFF_LAZYSTRILELOAD if file opened in 'O' mode
        * _TIFFMergeFields(): avoid NULL ptr dereference (issue #755).
        * Check td_stripbytecount_p and td_stripoffset_p for NULL pointer before (re-)writing to file. (issue     #749)
        * JPEGDecodeRaw: initialize output buffer to avoid returning uninitialized memory (issue #892)
        * JPEG decompressor: initialize output buffer when JPEG image is smaller than strile dimension to     avoid heap memory           disclosure (issue #826)
        * JPEG: fix generation of tiled 12-bit JPEG compressed files with libjpeg-turbo 3.0.3 (issue #773)
        * JPEGDecode(): fix memory leak in error code path (https://issues.oss-fuzz.com/issues/471945501)
        * tif_jpeg: reject mismatched JPEG data precision to avoid write overflow
        * Fix signed left-shift UB in LogLuv RANDITHER encoding (issue #850)
        * PixarLog: error out on invalid ABGR output buffer sizes.
        * PixarLog: complete ABGR bounds check for multi-row strip decoding.
        * PixarLog: fix heap-buffer-overflow in 8BITABGR decode with stride 3 (issue #824)
        * PixarLog: fix undoing horizontal differencing when SamplesPerPixel != 3 and 4 (issue #789).
        * PixarLog codec: fix potential integer overflow/out-of-bounds access (issue #797)
        * TIFFAdvanceDirectory(): avoid potential read heap-buffer-overflow in mmap code path on 32 bit builds           (https://issues.oss-fuzz.com/issues/506737072)
        * OJPEG: fix integer overflow in subsampling buffer allocation.
        * OJPEG: fix nullptr deref when changing compression method from OJPEG to something else (issue #795).
        * OJPEG fix potential integer overflow/out-of-bounds access (issue #796).
        * ojpeg: prevent EOF infinite loop (fixes commit 2a3d55b)
        * fix null pointer deference in issue #782.
        * fix stack-overflow in issue #784.

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-2026:21289-1 advisory.

    This update for tiff fixes the following issues

    - CVE-2026-12912: heap-based buffer overflow when processing crafted PixarLog-compressed TIFF image     (bsc#1269779).
    - CVE-2026-36849: denial of service when processing a a crafted TIFF file containing a large     SamplesPerPixel tag value       (bsc#1268434).

    Changes for tiff:

    - Update to 4.7.2:

     Software configuration changes:

     * cmake: Fix bundle identifiers to use reverse-DNS format
     * cmake: Fix and improve Apple framework build support
     * cmake: Use TurboJPEG CONFIG by default (issue #767)
     * cmake: changes related to 8-/12-bit modes
     * cmake: Replace CMath::CMath with direct link to avoid export.
     * Support for iOS-derived builds
     * Simplify cmake byte order version check
     * Add additional warnings, primarily floating precision conversions and integer arithmetic conversions
     * configure.ac: Require bootstrap with at least Autoconf 2.71.

     Bug fixes:

     * Handle negative TIFFReadFile results before state updates (issue #854)
     * tif_dirread.c: fix copy-paste bug in ChopUpSingleUncompressedStrip
     * tif_read.c: Fixed division by zero in TIFFStartStrip() (issue #777)
     * tif_dirwrite.c: add integer overflow checks to allocation size calculations
     * tif_print.c: add integer overflow checks to allocation size calculations
     * tif_write.c: fix OOB read and underflow in TIFFAppendToStrip copy loop
     * DumpModeSeek: add bounds check to prevent OOB pointer advance
     * TIFFGrowStrips: fix use-after-free on partial realloc failure.
     * Fix NULL dereference in _TIFFReserveLargeEnoughWriteBuffer() by validating the strip bytecount array     before accessing it.
     * TIFFRGBAImage: avoid int overflows in put functions (issue #830)
     * tif_getimage: fix inconsistent fromskew handling in put16bitbwtile (issue #792)
     * tif_getimage: Widen pointer-offset arithmetic in tif_getimage
     * putcontig8bitYCbCr44tile: fix wrong fromskew computation (issue #798)
     * putcontig8bitYCbCr42tile: Reject invalid YCbCr subsampling when image dimensions are smaller than the     subsampling block to prevent out-of-bounds writes. (issue #753)
     * TIFFFillStrip/Tile(): avoid excessive memory allocation (issue #831)
     * TIFFLinkDirectory() checks for IFD loops (issue #788)
     * Check result of _TIFFCheckRealloc to prevent memory leaks and segmentation fault when reallocation     fails.
     * TIFFVTileSize64(): in YCbCr contig non upsampled mode, validate td_samplesperpixel==3 (issue #805)
     * TIFFReadDirEntryPersampleShort(): be tolerant to tags like SampleFormat not having 1 or SamplesPerPixel     values (https://github.com/OSGeo/gdal/issues/13465)
     * tif_getimage: reject tile widths that would overflow toskew (issue #808)
     * Fix integer overflow in _TIFFPartialReadStripArray on 32-bit.
     * TIFFAppendToStrip(): add some checks to avoid null-pointer-dereferencing (issue #777).
     * _TIFFGetStrileOffsetOrByteCountValue(): fix potential crash on corrupted files when file opened in 'O'     mode (https://issues.oss-fuzz.com/issues/471328917)
     * TIFFReadDirectory(): re-set TIFF_LAZYSTRILELOAD if file opened in 'O' mode
     * _TIFFMergeFields(): avoid NULL ptr dereference (issue #755).
     * Check td_stripbytecount_p and td_stripoffset_p for NULL pointer before (re-)writing to file. (issue     #749)
     * JPEGDecodeRaw: initialize output buffer to avoid returning uninitialized memory (issue #892)
     * JPEG decompressor: initialize output buffer when JPEG image is smaller than strile dimension to avoid     heap memory disclosure (issue #826)
     * JPEG: fix generation of tiled 12-bit JPEG compressed files with libjpeg-turbo 3.0.3 (issue #773)
     * JPEGDecode(): fix memory leak in error code path (https://issues.oss-fuzz.com/issues/471945501)
     * tif_jpeg: reject mismatched JPEG data precision to avoid write overflow
     * Fix signed left-shift UB in LogLuv RANDITHER encoding (issue #850)
     * PixarLog: error out on invalid ABGR output buffer sizes.
     * PixarLog: complete ABGR bounds check for multi-row strip decoding.
     * PixarLog: fix undoing horizontal differencing when SamplesPerPixel != 3 and 4 (issue #789).
     * PixarLog codec: fix potential integer overflow/out-of-bounds access (issue #797)
     * TIFFAdvanceDirectory(): avoid potential read heap-buffer-overflow in mmap code path on 32 bit builds     (https://issues.oss-fuzz.com/issues/506737072)
     * OJPEG: fix integer overflow in subsampling buffer allocation.
     * OJPEG: fix nullptr deref when changing compression method from OJPEG to something else (issue #795).
     * OJPEG fix potential integer overflow/out-of-bounds access (issue #796).
     * ojpeg: prevent EOF infinite loop (fixes commit 2a3d55b)
     * fix null pointer deference in issue #782.
     * fix stack-overflow in issue #784.


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 libtiff. A remote attacker could exploit this vulnerability by providing a specially     crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the     PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer     overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
    (CVE-2026-12912)

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

ID	Name	Product	Family	Severity
329049	RockyLinux 10 : libtiff (RLSA-2026:41892)	Nessus	Rocky Linux Local Security Checks	high
329041	RockyLinux 9 : libtiff (RLSA-2026:42668)	Nessus	Rocky Linux Local Security Checks	high
328970	AlmaLinux 9 : libtiff (ALSA-2026:42668)	Nessus	Alma Linux Local Security Checks	high
328859	Oracle Linux 9 : libtiff (ELSA-2026-42668)	Nessus	Oracle Linux Local Security Checks	high
328830	Amazon Linux 2 : compat-libtiff3, --advisory ALAS2-2026-3822 (ALAS-2026-3822)	Nessus	Amazon Linux Local Security Checks	high
328827	Amazon Linux 2 : libtiff, --advisory ALAS2-2026-3823 (ALAS-2026-3823)	Nessus	Amazon Linux Local Security Checks	high
328806	RHEL 9 : libtiff (RHSA-2026:42668)	Nessus	Red Hat Local Security Checks	high
328492	Amazon Linux 2023 : libtiff, libtiff-devel, libtiff-static (ALAS2023-2026-1983)	Nessus	Amazon Linux Local Security Checks	high
328447	Fedora 43 : libtiff (2026-feac063d56)	Nessus	Fedora Local Security Checks	high
328048	AlmaLinux 10 : libtiff (ALSA-2026:41892)	Nessus	Alma Linux Local Security Checks	high
328019	Oracle Linux 10 : libtiff (ELSA-2026-41892)	Nessus	Oracle Linux Local Security Checks	high
327906	Debian dsa-6392 : libtiff-dev - security update	Nessus	Debian Local Security Checks	high
327900	RHEL 10 : libtiff (RHSA-2026:41892)	Nessus	Red Hat Local Security Checks	high
327719	Fedora 44 : libtiff (2026-cfbf964c2e)	Nessus	Fedora Local Security Checks	high
327325	SUSE SLED15 / SLES15 Security Update : tiff (SUSE-SU-2026:3054-1)	Nessus	SuSE Local Security Checks	high
327305	SUSE SLES12 Security Update : tiff (SUSE-SU-2026:3027-1)	Nessus	SuSE Local Security Checks	high
326692	SUSE SLED15 / SLES15 Security Update : tiff (SUSE-SU-2026:2853-1)	Nessus	SuSE Local Security Checks	high
326681	openSUSE 16 Security Update : tiff (openSUSE-SU-2026:21289-1)	Nessus	SuSE Local Security Checks	high
323736	Linux Distros Unpatched Vulnerability : CVE-2026-12912	Nessus	Misc.	high

Detections

Analytics

CVE-2026-12912

high

Tenable Plugins

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