vulnerability
Rocky Linux: CVE-2025-4091: firefox (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Jul 29, 2025 | Jul 31, 2025 | Apr 15, 2026 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Jul 29, 2025
Added
Jul 31, 2025
Modified
Apr 15, 2026
Description
Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. 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, Firefox ESR 128.10, Thunderbird 138, and Thunderbird 128.10.
Solutions
rocky-upgrade-firefoxrocky-upgrade-firefox-debuginforocky-upgrade-firefox-debugsourcerocky-upgrade-firefox-x11rocky-upgrade-thunderbirdrocky-upgrade-thunderbird-debuginforocky-upgrade-thunderbird-debugsource
References
- CVE-2025-4091
- https://attackerkb.com/topics/CVE-2025-4091
- CWE-119
- EUVD-EUVD-2025-12641
- https://errata.rockylinux.org/RLSA-2025:4443
- https://errata.rockylinux.org/RLSA-2025:4458
- https://errata.rockylinux.org/RLSA-2025:4460
- https://errata.rockylinux.org/RLSA-2025:4797
- https://errata.rockylinux.org/RLSA-2025:7428
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-12641
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.