CVE-2026-4687
Sandbox escape due to incorrect boundary conditions in the Telemetry component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
- Score
- 8.6 high
- Published
- 2026-03-24
- Links
- NVD · cve.org