CVE-2026-92063

Denial-of-service in the Audio/Video component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

• Published Sep 15, 2026
• CVSS 6.5 medium
• 0.4% chance of exploitation in the next 30 days (EPSS)
• A fix is available

CVE-2026-92063 at the National Vulnerability Database