What is CVE-2025-13032?

CVE-2025-13032 is a critical-severity vulnerability in Avast Antivirus, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.9/10. Published 2025-11-11.

How severe is CVE-2025-13032?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Avast Antivirus

CVE-2025-13032

Double fetch in sandbox kernel driver in Avast/AVG Antivirus <25.3 on windows allows local attacker to escalate privelages via pool overflow.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Avast Antivirus
Avast (Free/premiium/ultimeat) Antivirus — versions 0
Avg (Free/inernet Security/ultimate) Antivirus — versions 0
Avsat One — versions 0
Microsoft Windows

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

security@nortonlifelock.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-13032?: CVE-2025-13032 is a critical-severity vulnerability in Avast Antivirus, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.9/10. Published 2025-11-11.
How severe is CVE-2025-13032?: Critical severity. CVSS v3 base score is 9.9 out of 10.