Baris Akkaya

**Name of the Vulnerable Software and Affected Versions** Avast Antivirus versions 25.1.981.6 through 25.2.981.6 Avast Free Antivirus versions 25.1.981.6 through 25.2.981.6 **Description** An integer overflow or wraparound issue exists in Avast Antivirus. Successful exploitation of this issue could allow an attacker to escalate privileges and potentially execute arbitrary code within the kernel. The vulnerability is present in versions prior to 25.3. An attacker can leverage this vulnerability to gain local-to-SYSTEM privilege escalation. **Recommendations** Update Avast Antivirus to version 25.3 or later. Update Avast Free Antivirus to version 25.3 or later.