CVE-2026-12912

HIGH

Libtiff: libtiff: heap-based buffer overflow via crafted pixarlog-compressed tiff image

Title source: cna

Description

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).

References (6)

Core 6

Core References

https://gitlab.com/libtiff/libtiff/-/merge_requests/873

Vendor Advisory

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12912.json

https://gitlab.com/libtiff/libtiff/-/work_items/824

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-12912

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2492871

https://bugzilla.redhat.com/show_bug.cgi?id=2492871

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:34890

https://access.redhat.com/errata/RHSA-2026:34890

Scores

CVSS v3 7.3

EPSS 0.0023

EPSS Percentile 13.9%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-122

Status published

Products (7)

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 6

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat Hardened Images

Red Hat/Red Hat Hardened Images 4.7.1-2.4.hum1

Published Jun 29, 2026

Tracked Since Jun 29, 2026