CVE-2025-1012

HIGH

Firefox < 115.20.0, 115.20-115.*, 128.7-128.*, >=135 - Use-After-Free via Concurrent Delazification

Title source: llm
STIX 2.1

Description

A race during concurrent delazification could have led to a use-after-free. 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 7.5
EPSS 0.0043
EPSS Percentile 62.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
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 < 135.0
mozilla/thunderbird 128.0.1 - 128.7.0
Mozilla/Thunderbird 128.7 - 128.*
Mozilla/Thunderbird 135
Published Feb 04, 2025
Tracked Since Feb 18, 2026