CVE-2026-12912Libtiff: libtiff: heap-based buffer overflow via crafted pixarlog-compressed tiff image

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).

Timeline

Scores

EPSS (exploitation in 30 days)

0.43% · top 62% of all CVEs (14 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.

Affected products

• Red Hat · Red Hat Enterprise Linux 10

  • unaffected 0:4.6.0-8.el10_2.4 – < *

• Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support

  • unaffected 0:4.6.0-6.el10_0.4 – < *

• Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support

  • unaffected 0:3.9.4-12.el7_9.3 – < *

• Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support

  • unaffected 0:4.0.3-35.el7_9.3 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:3.9.4-16.el8_10 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:4.0.9-38.el8_10 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

  • unaffected 0:3.9.4-13.el8_4.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

  • unaffected 0:4.0.9-18.el8_4.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

  • unaffected 0:3.9.4-13.el8_4.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

  • unaffected 0:4.0.9-18.el8_4.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

  • unaffected 0:3.9.4-13.el8_6.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

  • unaffected 0:4.0.9-21.el8_6.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

  • unaffected 0:3.9.4-13.el8_6.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

  • unaffected 0:4.0.9-21.el8_6.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service

  • unaffected 0:3.9.4-13.el8_8.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service

  • unaffected 0:4.0.9-29.el8_8.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

  • unaffected 0:3.9.4-13.el8_8.3 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

  • unaffected 0:4.0.9-29.el8_8.3 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:4.4.0-18.el9_8.1 – < *

• Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

  • unaffected 0:4.4.0-8.el9_2.6 – < *

• Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

  • unaffected 0:4.4.0-12.el9_4.6 – < *

• Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support

  • unaffected 0:4.4.0-13.el9_6.6 – < *

• Red Hat · Red Hat Hardened Images

  • unaffected 4.7.1-2.4.hum1 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276886 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276884 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790277045 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276889 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276974 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703497 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703506 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703590 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703568 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703586 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703494 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703542 – < *

• Red Hat · Red Hat Enterprise Linux 6

  All versions: unknown

• Red Hat · Red Hat Enterprise Linux 8

  All versions: affected

• Red Hat · Red Hat Hardened Images

  All versions: unaffected

What to do

Workaround: To mitigate this issue, applications processing untrusted TIFF images should avoid explicitly configuring `PIXARLOGDATAFMT_8BITABGR` when decoding PixarLog-compressed TIFF images with three samples per pixel. This specific combination of output format and samples per pixel is required to trigger the heap-based buffer overflow.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2026-40151 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-12912](https://cveledger.app/badge/CVE-2026-12912.svg)](https://cveledger.app/cve/CVE-2026-12912)

Record last updated 4 Nov 2026, 22:04 UTC.