CVE-2025-0242 — Out-of-bounds Write in Mozilla Firefox
Severity
6.5MEDIUMNVD
OSV5.4
EPSS
2.9%
top 13.60%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 7
Latest updateJul 22
Description
Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, 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, Firefox ESR 115.19, Thunderbird 134, and Thunderbird 128.6.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 3.9 | Impact: 2.5
Affected Packages4 packages
🔴Vulnerability Details
4CVEList▶
Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6↗2025-01-07
GHSA▶
GHSA-qw28-p6qx-vj78: Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115↗2025-01-07
OSV▶
CVE-2025-0242: Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115↗2025-01-07