vulnerability
Ubuntu: USN-7991-1 (CVE-2025-5272): Thunderbird vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | May 27, 2025 | Jun 26, 2025 | Feb 4, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
May 27, 2025
Added
Jun 26, 2025
Modified
Feb 4, 2026
Description
Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 < 139 and Thunderbird < 139.
Solution
ubuntu-upgrade-thunderbird
References
- CVE-2025-5272
- https://attackerkb.com/topics/CVE-2025-5272
- CWE-787
- UBUNTU-USN-7991-1
- URL-https://bugzilla.mozilla.org/buglist.cgi?bug_id=1726254%2C1742738%2C1960121
- URL-https://www.cve.org/CVERecord?id=CVE-2025-5272
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2025-42/#CVE-2025-5272
- URL-https://www.mozilla.org/security/advisories/mfsa2025-42/
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.