vulnerability
MFSA2025-64 Firefox: Security Vulnerabilities fixed in Firefox 142 (CVE-2025-9184)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Aug 19, 2025 | Aug 21, 2025 | Apr 15, 2026 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Aug 19, 2025
Added
Aug 21, 2025
Modified
Apr 15, 2026
Description
Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2.
Solution
mozilla-firefox-upgrade-142_0
Rapid7 Labs
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