CVE-2025-0243

MEDIUM

Firefox <134 - Firefox ESR <128.6 - Memory Corruption

Title source: llm
STIX 2.1

Description

Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

References (6)

Core 6

Scores

CVSS v3 5.1
EPSS 0.0003
EPSS Percentile 8.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (7)
mozilla/firefox < 128.6.0
mozilla/firefox < 133.0
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