CVE-2025-10537
HIGH EPSS 22.2%
Published Sep 16, 20259mo ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
Published Sep 16, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago
Description
Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. 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 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
22.2% 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=1938220%2C1980730%2C1981280%2C1981283%2C1984505%2C1985067
- lists.debian.org https://lists.debian.org/debian-lts-announce/2025/09/msg00020.html
- lists.debian.org https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-73/
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-75/
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-77/
- mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-78/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.