CVE-2025-9900 - CVE House
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Status published High CVE-2025-9900

Libtiff: libtiff write-what-where

Vulnerability Description

A flaw was found in Libtiff. This vulnerability is a "write-what-where" condition, triggered when the library processes a specially crafted TIFF image file. By providing an abnormally large image height value in the file's metadata, an attacker can trick the library into writing attacker-controlled color data to an arbitrary memory location. This memory corruption can be exploited to cause a denial of service (application crash) or to achieve arbitrary code execution with the permissions of the user.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Red Hat would like to thank Gareth C (AnchorSec Ltd.) for reporting this issue.

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Affected Vendor

Affected Software

Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat AI Inference Server 3.2, Red Hat Discovery 2, Red Hat Hardened Images, Red Hat Enterprise Linux 6
Vulnerable Versions:
0, 0:4.6.0-6.el10_0.1, 0:4.6.0-6.el10_1.1, 0:3.9.4-12.el7_9.1, 0:4.0.3-35.el7_9.1, 0:3.9.4-14.el8_10, 0:4.0.9-35.el8_10, 0:4.0.9-3.el8_10, 0:3.9.4-13.el8_2.1, 0:4.0.9-17.el8_2.1, 0:8.10-3.el8_2.1, 0:3.9.4-13.el8_4.1, 0:4.0.9-18.el8_4.1, 0:8.10-3.el8_4.1, 0:3.9.4-13.el8_6.1, 0:4.0.9-21.el8_6.1, 0:8.10-3.el8_6.1, 0:3.9.4-13.el8_8.1, 0:4.0.9-29.el8_8.1, 0:8.10-3.el8_8.1, 0:4.4.0-13.el9_6.2, 0:4.4.0-15.el9_7.2, 0:4.2.0-3.el9_0.2, 0:4.4.0-8.el9_2.4, 0:4.4.0-12.el9_4.4, 3.2.2-1765379088, 3.2.2-1765379049, 3.2.2-1764871796, 1772160593, 1772160625, 2.4.0-1763656152, 4.7.1-2.1.hum1

Timeline

Official Publish: September 23rd, 2025
Last Modified: June 29th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-123

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.