CriticalCritical vulnerability
CVE-2026-100800 (CVSS 9.6)
NVD · officialPublished Sep 29, 2026Risk 50/100
Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Technical details
CVSS
9.6
AV:NetworkAC:LowPR:NoneUI:RequiredC:HighI:HighA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
Open primary source