CVE-2025-1017 — Out-of-bounds Write in Mozilla Firefox
Severity
9.8CRITICALNVD
EPSS
0.3%
top 45.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 4
Latest updateJul 22
Description
Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. 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 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9
Affected Packages4 packages
🔴Vulnerability Details
4OSV▶
CVE-2025-1017: Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128↗2025-02-04
CVEList▶
Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7↗2025-02-04
GHSA▶
GHSA-2ccw-r7qp-2p9j: Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128↗2025-02-04