Mozilla has released security updates to address one critical vulnerability in Firefox and Firefox ESR. Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in Firefox’s Inter-process Communication (IPC) code.
A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. Exploitation of original Google Chrome vulnerability CVE-2025-2783: Google has observed exploitation of CVE-2025-2783 in the wild. More information can be found in Cyber Alert CC-4639
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Source: NHS Digital
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