An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the process_command_opts() function in tools/tiffcrop.c

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-2026:1129 advisory.

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

    CVE-2026-52490:
    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the process_command_opts() function in tools/tiffcrop.c

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.

According to the versions of the libtiff packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer     sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr     conversion of a crafted TIFF image(CVE-2026-52492)

    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the process_command_opts() function in tools/tiffcrop.c(CVE-2026-52490)

    ['Hi,\n\nI would like to disclose CVE-2026-36849, a denial of service vulnerability\nin libtiff.\n\n==     Summary ==\n\nAn issue in libtiff v4.7.1 allows an attacker to cause a denial of service\nvia a crafted     TIFF file containing a large SamplesPerPixel tag value.\n\n== Affected Versions ==\n\nlibtiff v4.7.1 and     prior\n\n== Patch ==', '== References ==\n\n- CVE: CVE-2026-36849\n- Issue:', 'Regards,\nSatriyo     Utomo\n(aleens-lab)'](CVE-2026-36849)

    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 EulerOS libtiff 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 libtiff packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    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)

    An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer     sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr     conversion of a crafted TIFF image(CVE-2026-52492)

    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the process_command_opts() function in tools/tiffcrop.c(CVE-2026-52490)

    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the libtiff/tools/thumbnail.c: main() component(CVE-2026-52491)

    ['Hi,\n\nI would like to disclose CVE-2026-36849, a denial of service vulnerability\nin libtiff.\n\n==     Summary ==\n\nAn issue in libtiff v4.7.1 allows an attacker to cause a denial of service\nvia a crafted     TIFF file containing a large SamplesPerPixel tag value.\n\n== Affected Versions ==\n\nlibtiff v4.7.1 and     prior\n\n== Patch ==', '== References ==\n\n- CVE: CVE-2026-36849\n- Issue:', 'Regards,\nSatriyo     Utomo\n(aleens-lab)'](CVE-2026-36849)

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

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

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow
    vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This
    flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially
    causing a denial of service (application crash) or arbitrary code execution. (CVE-2026-4775)

  - 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)

  - An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code
    via the process_command_opts() function in tools/tiffcrop.c (CVE-2026-52490)

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code
    via the process_command_opts() function in tools/tiffcrop.c (CVE-2026-52490)

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-2026_69095 advisory.

    * libtiff: libtiff: Arbitrary code execution via process_command_opts() function (CVE-2026-52490)

Tenable has extracted the preceding description block directly from the CIQ 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-2026-69095 advisory.

    [4.0.9-39]
    - fix CVE-2026-52490: integer overflow in tiffcrop subdivision       calculation (RHEL-248298)

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 MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1889:10 advisory.

    * libtiff: libtiff: Arbitrary code execution via process_command_opts() function (CVE-2026-52490)

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 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:69095 advisory.

    * libtiff: libtiff: Arbitrary code execution via process_command_opts() function (CVE-2026-52490)

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 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:69095 advisory.

    * libtiff: libtiff: Arbitrary code execution via process_command_opts() function (CVE-2026-52490)

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 Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:69095 advisory.

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

    Security Fix(es):

    * libtiff: libtiff: Arbitrary code execution via process_command_opts() function (CVE-2026-52490)

    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 version of libtiff installed on the remote host is prior to 4.0.3-35. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3921 advisory.

    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the process_command_opts() function in tools/tiffcrop.c (CVE-2026-52490)

    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the libtiff/tools/thumbnail.c: main() component (CVE-2026-52491)

    An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer     sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr     conversion of a crafted TIFF image (CVE-2026-52492)

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.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-2156 advisory.

    An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the process_command_opts() function in tools/tiffcrop.c (CVE-2026-52490)

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

  - An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code     via the process_command_opts() function in tools/tiffcrop.c (CVE-2026-52490)

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

ID	Name	Product	Family	Type	Severity
365120	TencentOS Server 3: libtiff (TSSA-2026:1129)	Nessus	Tencent Local Security Checks	Local	critical
365016	EulerOS 2.0 SP11 : libtiff (EulerOS-SA-2026-4342)	Nessus	Huawei Local Security Checks	Local	critical
364975	EulerOS 2.0 SP11 : libtiff (EulerOS-SA-2026-4251)	Nessus	Huawei Local Security Checks	Local	critical
364761	EulerOS 2.0 SP13 : libtiff (EulerOS-SA-2026-4157)	Nessus	Huawei Local Security Checks	Local	critical
364726	EulerOS 2.0 SP13 : libtiff (EulerOS-SA-2026-4066)	Nessus	Huawei Local Security Checks	Local	critical
473840	Alpine: libtiffxx, multiple tiff packages: security update to 4.7.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	critical
473840	Alpine: libtiffxx, multiple tiff packages: security update to 4.7.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	critical
461675	Echo: tiff: security update to 4.7.0-3+e14	Tenable Cloud Security	Echo Local Security Checks	Local	critical
461675	Echo: tiff: security update to 4.7.0-3+e14	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	critical
356822	Rocky Linux 8 [CIQ] Security Update: libtiff / libtiff-debuginfo / libtiff-debugsource / libtiff-devel / etc (crlsa-2026_69095)	Nessus	Rocky Linux Local Security Checks	Local	critical
349493	Oracle Linux 8 : libtiff (ELSA-2026-69095)	Nessus	Oracle Linux Local Security Checks	Local	critical
349342	MiracleLinux 8 : libtiff-4.0.9-39.el8_10 (AXSA:2026-1889:10)	Nessus	Miracle Linux Local Security Checks	Local	critical
348761	RockyLinux 8 : libtiff (RLSA-2026:69095)	Nessus	Rocky Linux Local Security Checks	Local	critical
348602	AlmaLinux 8 : libtiff (ALSA-2026:69095)	Nessus	Alma Linux Local Security Checks	Local	critical
348383	RHEL 8 : libtiff (RHSA-2026:69095)	Nessus	Red Hat Local Security Checks	Local	critical
345804	Amazon Linux 2 : libtiff (ALAS-2026-3921)	Nessus	Amazon Linux Local Security Checks	Local	critical
345798	Amazon Linux 2023 : libtiff, libtiff-devel, libtiff-static (ALAS2023-2026-2156)	Nessus	Amazon Linux Local Security Checks	Local	critical
339485	Linux Distros Unpatched Vulnerability : CVE-2026-52490	Nessus	Misc.	Local	critical

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