CVE-2026-4775

high

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.

References

https://lists.debian.org/debian-lts-announce/2026/04/msg00016.html

https://bugzilla.redhat.com/show_bug.cgi?id=2450768

https://access.redhat.com/security/cve/CVE-2026-4775

https://access.redhat.com/errata/RHSA-2026:74674

https://access.redhat.com/errata/RHSA-2026:33388

https://access.redhat.com/errata/RHSA-2026:30349

https://access.redhat.com/errata/RHSA-2026:30089

https://access.redhat.com/errata/RHSA-2026:30088

https://access.redhat.com/errata/RHSA-2026:30087

https://access.redhat.com/errata/RHSA-2026:30078

https://access.redhat.com/errata/RHSA-2026:25910

https://access.redhat.com/errata/RHSA-2026:25096

https://access.redhat.com/errata/RHSA-2026:24992

https://access.redhat.com/errata/RHSA-2026:20592

https://access.redhat.com/errata/RHSA-2026:20591

https://access.redhat.com/errata/RHSA-2026:20585

https://access.redhat.com/errata/RHSA-2026:20583

https://access.redhat.com/errata/RHSA-2026:19702

https://access.redhat.com/errata/RHSA-2026:19659

https://access.redhat.com/errata/RHSA-2026:19657

https://access.redhat.com/errata/RHSA-2026:19609

https://access.redhat.com/errata/RHSA-2026:19608

https://access.redhat.com/errata/RHSA-2026:19604

https://access.redhat.com/errata/RHSA-2026:19586

https://access.redhat.com/errata/RHSA-2026:19585

https://access.redhat.com/errata/RHSA-2026:19363

https://access.redhat.com/errata/RHSA-2026:19150

https://access.redhat.com/errata/RHSA-2026:16055

https://access.redhat.com/errata/RHSA-2026:14929

https://access.redhat.com/errata/RHSA-2026:12271

https://access.redhat.com/errata/RHSA-2026:12265

Details

Source: Mitre, NVD

Published: 2026-03-24

Updated: 2026-10-02

Named Vulnerability: GHSA-cm99-m826-vgg7

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00056