CVE-2025-5268
HIGH EPSS 31.6%
Published May 27, 20251y ago · Modified Jun 17, 20261w ago
8.1 CVSS 3.1
Published May 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago
Description
Memory safety bugs present in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10. 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 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
31.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
Affected Products 4
References 7
- bugzilla.mozilla.org https://bugzilla.mozilla.org/buglist.cgi?bug_id=1950136%2C1958121%2C1960499%2C1962634
- lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00043.html
- lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-42/
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-44/
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-45/
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-46/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.