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

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

  - 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)

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.

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

  - 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)

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

ID	Name	Product	Family	Type	Severity
462635	Echo: tiff: security update to 4.7.0-3+e14	Tenable Cloud Security	Echo Local Security Checks	Local	high
462635	Echo: tiff: security update to 4.7.0-3+e14	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
345804	Amazon Linux 2 : libtiff (ALAS-2026-3921)	Nessus	Amazon Linux Local Security Checks	Local	critical
339482	Linux Distros Unpatched Vulnerability : CVE-2026-52492	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-52492

high

Tenable Plugins

high

high

critical

high