vulnerability
Ubuntu: USN-7991-1 (CVE-2025-4092): Thunderbird vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:P/A:N) | Apr 29, 2025 | Jun 26, 2025 | Apr 15, 2026 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
Apr 29, 2025
Added
Jun 26, 2025
Modified
Apr 15, 2026
Description
Memory safety bugs present in Firefox 137 and Thunderbird 137. 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 138 and Thunderbird 138.
Solution
ubuntu-upgrade-thunderbird
References
- CVE-2025-4092
- https://attackerkb.com/topics/CVE-2025-4092
- CWE-119
- EUVD-EUVD-2025-12653
- UBUNTU-USN-7991-1
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1924108%2C1950780%2C1959367
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-12653
- https://www.cve.org/CVERecord?id=CVE-2025-4092
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-28/#CVE-2025-4092
- https://www.mozilla.org/security/advisories/mfsa2025-28/
- https://www.mozilla.org/security/advisories/mfsa2025-31/
Rapid7 Labs
2026 Global Threat Landscape Report
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