VDB
CVE-2026-92050
CVE-2026-92050
PUBLISHED
CVSS 9.1 CRITICAL
Reported by mozilla · Published September 15, 2026
Sandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
Risk Scores
CVSS 3.1
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | 156 |
| Mozilla | Thunderbird | 156 |
| Mozilla | Thunderbird | 156, 156 |
| Mozilla | Firefox | 156, 156 |
Timeline
- Sep 15, 2026 Coalition ESS Score
- Sep 15, 2026 CVE Published
- Sep 16, 2026 EPSS Score
- Sep 21, 2026 CVE Updated
- Sep 22, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Sep 26, 2026 EPSS Score
- Sep 30, 2026 EPSS Score
- Oct 2, 2026 EPSS Score
- Oct 6, 2026 EPSS Score
- Oct 8, 2026 EPSS Score
- Oct 11, 2026 EPSS Score