VULNERABILITY INTELLIGENCE

CVE-2025-5269

CVSS score6.5 MEDIUM
EPSS probability0.48%
CISA KEVNot currently listed
Published2025-05-27
Last modified2026-10-05
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

Memory safety bug present in Firefox ESR 128.10, and Thunderbird 128.10. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 128.11 and Thunderbird 128.11.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references