PatchTheCVECVE-2025-13032: Double fetch in sandbox kernel driver in Avast/AVG Antivirus <25.3 on windows allows local attacker to escala
38
This month
CRITICAL 9.9UPGRADE
CVE-2025-13032 is a critical-severity flaw (CVSS 9.9) affecting antivirus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Double fetch in sandbox kernel driver in Avast/AVG Antivirus <25.3 on windows allows local attacker to escalate privelages via pool overflow.
Why this priority
- Critical severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.9 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 85%) |
| CISA exploited list | No |
| Weakness | CWE-367 |
| Published | 2025-11-11 |
| Last modified | 2026-10-23 |
Publisher (CNA): NortonLifeLock Inc. · Vendor: avast
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
avast antivirus UPGRADE
Affected: < 25.3
Fixed in: 25.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy antivirus || rpm -q antivirus || antivirus --version
2. UPGRADE to 25.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade antivirus
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade antivirus
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.