CVE-2025-11715: Memory Safety Bugs Present
Source GCVE Database
Not known to be exploited · CVSS 8.8 High · fixed in 144 : patch affected systems soon.
Data as of 29 Oct 2026, 23:57 UTC
- Patch
- Available – fixed in 144, 140.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 14 Oct 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
Mozilla has released official fixes for these vulnerabilities in Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144, and Thunderbird 144. Users and administrators should update to these fixed versions immediately to mitigate the risk. No additional mitigation steps are required beyond applying the official patches.
Description
Multiple memory safety vulnerabilities were identified in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143, and Thunderbird 143. These bugs showed evidence of memory corruption and could potentially be exploited to execute arbitrary code. The vulnerabilities were addressed and fixed in Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144, and Thunderbird 144. The overall impact of these issues is rated high with a CVSS score of 8.8.
References
- nvd.nist.gov/vuln/detail/CVE-2025-11715 (opens in a new tab)
- bugzilla.mozilla.org/buglist.cgi?bug_id=1983838%2C1987624%2C1988244%2C1988912%2C1989734%2C1990085%2C1991899 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00015.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00031.html (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-81 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-83 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-84 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2025-85 (opens in a new tab)