vulnerability

MFSA2025-11 Thunderbird: Security Vulnerabilities fixed in Thunderbird 135 (CVE-2025-1010)

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Feb 4, 2025
Added
Feb 5, 2025
Modified
Feb 2, 2026

Description

An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.

Solution

mozilla-thunderbird-upgrade-135_0
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.