CVE-2026-6753

Published: Apr 21, 2026

Modified: May 27, 2026

PUBLISHED

Description

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Vendor	Product	Versions
Mozilla	Firefox	unaffected `140.10 - <= 140.` unaffected `150 - <= `
Mozilla	Thunderbird	unaffected `140.10 - <= 140.` unaffected `150 - <= `

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2027501

https://www.mozilla.org/security/advisories/mfsa2026-30/

https://www.mozilla.org/security/advisories/mfsa2026-32/

https://www.mozilla.org/security/advisories/mfsa2026-33/

https://www.mozilla.org/security/advisories/mfsa2026-34/

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now

CVE-2026-6753

Description

Affected Products

References