CVE-2025-0241

HIGH

Firefox < 134.0 and 128.6-128.* - Use-After-Free via Text Segmentation

Title source: llm
STIX 2.1

Description

When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

References (6)

Core 6

Scores

CVSS v3 7.7
EPSS 0.0007
EPSS Percentile 22.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-401
Status published
Products (7)
mozilla/firefox < 128.6.0
mozilla/firefox < 134.0
Mozilla/Firefox 128.6 - 128.*
Mozilla/Firefox 134
mozilla/thunderbird < 128.6.0
Mozilla/Thunderbird 128.6 - 128.*
Mozilla/Thunderbird 134
Published Jan 07, 2025
Tracked Since Feb 18, 2026