CVE-2026-124924 is a high severity vulnerability involving incorrect boundary conditions in the Graphics: WebRender component of Firefox. This flaw was addressed and fixed in Firefox version 160 and Firefox ESR 153.7. The vulnerability could lead to significant impacts on confidentiality, integrity, and availability as indicated by its CVSS score of 8.8. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.