CVE-2026-4775: Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-4775?
CVE-2026-4775 has been classified as a critical vulnerability due to the potential for arbitrary code execution.
How do I fix CVE-2026-4775?
To fix CVE-2026-4775, you should update to the latest patched version of the libtiff library.
What are the possible impacts of CVE-2026-4775?
CVE-2026-4775 can lead to arbitrary code execution or denial of service when processing malicious TIFF files.
Who is affected by CVE-2026-4775?
CVE-2026-4775 affects users of the libtiff library across various software implementations.
How can CVE-2026-4775 be exploited?
CVE-2026-4775 can be exploited by a remote attacker sending specially crafted TIFF files that trigger the signed integer overflow.