CVE-2026-100820High· 8.8▾ TwilightPrivilege escalation in the Address Bar component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
— → 8.8
none → high
0.2%
0.2% → 0.2%
Last analysed / modified upstream
Privilege escalation in the Address Bar component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
firefox < 140.17.0firefox >= 141.0, < 153.4.0firefox >= 154.0.0, < 157.0.0thunderbird < 140.17.0thunderbird >= 141.0, < 153.4.0thunderbird >= 154.0, < 157.0Upgrade past the affected range:
firefox 157.0.0thunderbird 157.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-92035Critical· 9.6Sandbox escape due to incorrect boundary conditions in the Graphics component
CVE-2026-92047High· 8.8Privilege escalation in the Crash Reporting component
CVE-2026-92053High· 8.8Privilege escalation in the Graphics: CanvasWebGL component
CVE-2026-92055High· 8.8Privilege escalation in the DevTools component
CVE-2026-92062High· 8.8Privilege escalation in the Session Restore component
CVE-2026-92073High· 8.8Privilege escalation in the Enterprise Policies component