Vulnerability in Mozilla Firefox
CVE-2026-12297
Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
Affected products
- Mozilla Firefox — versions 115.37, 140.12, 152
- Mozilla Thunderbird — versions 140.12, 152