CVE-2026-0882

HIGH

Firefox <115.32.0, 140.7-140.*, <147.0, >=147 & Thunderbird <140.7.0, 140.7-140.*, <147.0, >=147 - Use-After-Free in IPC

Title source: llm
STIX 2.1

Description

Use-after-free in the IPC component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

References (6)

Core 6

Scores

CVSS v3 8.8
EPSS 0.0003
EPSS Percentile 7.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (9)
mozilla/firefox < 115.32.0
mozilla/firefox < 147.0
Mozilla/Firefox 115.32 - 115.*
Mozilla/Firefox 140.7 - 140.*
Mozilla/Firefox 147
mozilla/thunderbird < 140.7.0
mozilla/thunderbird < 147.0
Mozilla/Thunderbird 140.7 - 140.*
Mozilla/Thunderbird 147
Published Jan 13, 2026
Tracked Since Feb 18, 2026