CVE-2026-124875: Incorrect Boundary Conditions
Source GCVE Database
Not known to be exploited · CVSS 8.8 High.
Data as of 10 Nov 2026, 17:32 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 8.8 |
|---|
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 10 Nov 2026
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 10 Nov 2026.
What to do
AI-suggested
Users and administrators should update Firefox to version 160 or later, or Firefox ESR 115.45 or later, where this vulnerability has been fixed. No additional mitigation steps are required as the vendor has provided an official fix.
Description
CVE-2026-124875 is a high-severity vulnerability involving incorrect boundary conditions in the DOM's CSS Object Model component in Firefox. This flaw could potentially allow an attacker to cause significant impact on confidentiality, integrity, and availability. The issue was fixed in Firefox 160 and Firefox ESR 115.45 and later versions.
References
- nvd.nist.gov/vuln/detail/CVE-2026-124875 (opens in a new tab)
- bugzilla.mozilla.org/show_bug.cgi?id=2081380 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-125 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-126 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-127 (opens in a new tab)