CVE-2026-4775Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing

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.

Timeline

Scores

EPSS (exploitation in 30 days)

0.58% · top 52% of all CVEs (12 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 7.8.

Affected products

• Red Hat · Red Hat Enterprise Linux 10

  • unaffected 0:4.6.0-6.el10_1.3 – < *

• Red Hat · Red Hat Enterprise Linux 10

  • unaffected 0:4.6.0-8.el10_2.1 – < *

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

  • unaffected 0:4.6.0-6.el10_0.3 – < *

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

  • unaffected 0:3.9.4-12.el7_9.2 – < *

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

  • unaffected 0:4.0.3-35.el7_9.2 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:4.0.9-37.el8_10 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:3.9.4-15.el8_10 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:4.0.9-4.el8_10 – < *

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

  • unaffected 0:4.0.9-18.el8_4.2 – < *

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

  • unaffected 0:3.9.4-13.el8_4.2 – < *

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

  • unaffected 0:4.0.9-18.el8_4.2 – < *

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

  • unaffected 0:3.9.4-13.el8_4.2 – < *

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

  • unaffected 0:4.0.9-21.el8_6.2 – < *

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

  • unaffected 0:3.9.4-13.el8_6.2 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update Service

  • unaffected 0:4.0.9-21.el8_6.2 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update Service

  • unaffected 0:3.9.4-13.el8_6.2 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions

  • unaffected 0:4.0.9-21.el8_6.2 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions

  • unaffected 0:3.9.4-13.el8_6.2 – < *

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

  • unaffected 0:4.0.9-29.el8_8.2 – < *

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

  • unaffected 0:3.9.4-13.el8_8.2 – < *

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

  • unaffected 0:4.0.9-29.el8_8.2 – < *

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

  • unaffected 0:3.9.4-13.el8_8.2 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:4.4.0-15.el9_7.3 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:4.4.0-18.el9_8 – < *

• Red Hat · Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

  • unaffected 0:4.2.0-3.el9_0.3 – < *

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

  • unaffected 0:4.4.0-8.el9_2.5 – < *

• Red Hat · Red Hat Enterprise Linux 9.4 Extended Update Support

  • unaffected 0:4.4.0-12.el9_4.5 – < *

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

  • unaffected 0:4.4.0-13.el9_6.4 – < *

• Red Hat · Red Hat AI Inference Server 3.2

  • unaffected 1780681984 – < *

• Red Hat · Red Hat AI Inference Server 3.3

  • unaffected 1782352950 – < *

• Red Hat · Red Hat AI Inference Server 3.3

  • unaffected 1782352919 – < *

• Red Hat · Red Hat AI Inference Server 3.3

  • unaffected 1782353093 – < *

• Red Hat · Red Hat AI Inference Server 3.3

  • unaffected 1782352847 – < *

• Red Hat · Red Hat Hardened Images

  • unaffected 4.7.1-2.2.hum1 – < *

• Red Hat · Red Hat Hardened Images

  • unaffected 4.7.1-2.3.hum1 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703542 – < *

• Red Hat · Red Hat Enterprise Linux 6

  All versions: affected

What to do

Workaround: 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.

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-2026-14901 (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-2026-4775](https://cveledger.app/badge/CVE-2026-4775.svg)](https://cveledger.app/cve/CVE-2026-4775)

Record last updated 4 Nov 2026, 22:41 UTC.