CVE-2025-1937: Memory Safety Bugs Present
Source GCVE Database
Not known to be exploited · CVSS 7.5 High · fixed in 136 : patch affected systems soon.
Data as of 30 Oct 2026, 01:14 UTC
- Patch
- Available – fixed in 136, 128.8, 115.21
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 4 Mar 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
AI-suggested
Apply the official patches released by Mozilla by upgrading to Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, or Thunderbird 128.8. These versions contain fixes for the memory safety bugs. No additional mitigation is required as the vulnerabilities are addressed in these updates.
Description
Multiple memory safety bugs were identified in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. These bugs showed evidence of memory corruption and could potentially be exploited to execute arbitrary code. The vulnerabilities have been fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8. The CVSS score for this issue is 7.5, indicating high severity. No known exploits in the wild have been reported. The vendor has released official patches addressing these issues.
References
- nvd.nist.gov/vuln/detail/CVE-2025-1937 (opens in a new tab)
- bugzilla.mozilla.org/buglist.cgi?bug_id=1938471%2C1940716 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/03/msg00006.html (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-14 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-15 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-16 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-17 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-18 (opens in a new tab)
- openwall.com/lists/oss-security/2025/03/10/6 (opens in a new tab)