CVE-2025-1931

HIGH

Firefox <136-0 & Thunderbird <128.8 - Use After Free

Title source: llm
STIX 2.1

Description

It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

References (7)

Core 7

Scores

CVSS v3 7.5
EPSS 0.0039
EPSS Percentile 60.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-416
Status published
Products (8)
mozilla/firefox < 115.21.0
mozilla/firefox < 136.0
Mozilla/Firefox 115.21 - 115.*
Mozilla/Firefox 128.8 - 128.*
Mozilla/Firefox 136
mozilla/thunderbird < 128.8.0
Mozilla/Thunderbird 128.8 - 128.*
Mozilla/Thunderbird 136
Published Mar 04, 2025
Tracked Since Feb 18, 2026