CVE-2026-34085

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

fontconfig before 2.17.1 has an off-by-one error in allocation during sfnt capability handling, leading to a one-byte out-of-bounds write, and potentially a crash or code execution. This is in FcFontCapabilities in fcfreetype.c.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-193

Affected software

No affected versions have been published.

Timeline

Published
Mar 25, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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