Integer Overflow Vulnerability in Firefox by Mozilla

CVE-2026-74977

What is CVE-2026-74977?

An integer overflow vulnerability has been identified in the Graphics component of Mozilla's Firefox browser. This flaw can potentially lead to unexpected behavior, allowing attackers to exploit the vulnerability to execute arbitrary code. Mozilla has addressed this issue in Firefox version 154 and Firefox Extended Support Release (ESR) version 153.1, providing critical updates to enhance the security of users' systems. To protect against potential threats, users should ensure they are using the latest version of Firefox.

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