CVE-2025-1009

CRITICAL

Firefox < 115.20.0 and < 135.0 - Use-After-Free via Crafted XSLT Data

Title source: llm
STIX 2.1

Description

An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

References (8)

Core 8

Scores

CVSS v3 9.8
EPSS 0.0080
EPSS Percentile 74.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-416
Status published
Products (9)
mozilla/firefox < 115.20.0
mozilla/firefox < 135.0
Mozilla/Firefox 115.20 - 115.*
Mozilla/Firefox 128.7 - 128.*
Mozilla/Firefox 135
mozilla/thunderbird 128.0.1 - 128.7.0
Mozilla/Thunderbird 128.7 - 128.*
mozilla/thunderbird 131.0 - 135.0
Mozilla/Thunderbird 135
Published Feb 04, 2025
Tracked Since Feb 18, 2026