Detections
Analytics
CVE-2025-1020
critical
Description
Memory safety bugs present in Firefox 134 and Thunderbird 134. 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 affects Firefox < 135 and Thunderbird < 135.
References
https://www.securityweek.com/chrome-133-firefox-135-patch-high-severity-vulnerabilities/
https://www.mozilla.org/security/advisories/mfsa2025-11/
https://www.mozilla.org/security/advisories/mfsa2025-07/
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1939063%2C1942169