CVE-2026-92050Critical· 9.1▾ MidnightSandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.1 · likelihood 0.1 · 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 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
— → 6.1
none → medium
0.1%
6.1 → 9.1
medium → critical
0.1% → 0.4%
Last analysed / modified upstream
Sandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
firefox < 156.0.0thunderbird < 156.0Upgrade past the affected range:
firefox 156.0.0thunderbird 156.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-100803High· 8.1Same-origin policy bypass in the WebExtensions component
CVE-2025-14333High· 8.1Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145
CVE-2025-14328High· 8.8Privilege escalation in the Netmonitor component
CVE-2025-14329High· 8.8Privilege escalation in the Netmonitor component
CVE-2025-14330Critical· 9.8JIT miscompilation in the JavaScript Engine: JIT component
CVE-2025-14324Critical· 9.8JIT miscompilation in the JavaScript Engine: JIT component