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HIGH

Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing

Published Mar 24, 2026

Description

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.

Affected products

Remediation

Vendor solution

To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF files with applications linked against the libtiff library. If processing untrusted TIFF files is unavoidable, consider running the affected applications within a sandboxed environment to limit the potential impact of successful exploitation. This operational control helps contain the effects of an out-of-bounds write, reducing the risk of denial of service or arbitrary code execution.

Red Hat statement

A flaw in the libtiff library, affecting the processing of specially crafted TIFF files, could lead to a denial of service or potentially arbitrary code execution. This vulnerability, caused by a signed integer overflow during TIFF image processing, results in an out-of-bounds heap write. Red Hat products that process untrusted TIFF files using libtiff may be impacted.

Red Hat mitigation

To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF files with applications linked against the libtiff library. If processing untrusted TIFF files is unavoidable, consider running the affected applications within a sandboxed environment to limit the potential impact of successful exploitation. This operational control helps contain the effects of an out-of-bounds write, reducing the risk of denial of service or arbitrary code execution.

Weaknesses (1)

CWE-190

Integer Overflow

References (35)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Mar 24, 2026
Updated Oct 2, 2026
Reserved Mar 24, 2026
Link CVE-2026-4775
CISA Vulnrichment
Updated Mar 24, 2026
NVD
Status Modified
Modified Oct 2, 2026
Link CVE-2026-4775
Red Hat
Severity Important
Public date Mar 24, 2026
Links CVE-2026-4775 - Bugzilla
ENISA EUVD
Assigner redhat
Published Mar 24, 2026
Updated Oct 2, 2026
Exploited since n/a
Link EUVD-2026-14901
EUVD-2026-14901