CVE-2009-3522

Name: CVE-2009-3522
Creator: NVD / NIST
Published: 2009-10-01T17:00:00.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.95%

Last modified Jun 16, 2026

CVE-2009-3522 is a vulnerability of currently unknown severity. Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows 4.8.1351, and possibly other versions before 4.8.1356, allows local users to cause a denial of service (system crash) and possibly gain privileges via a crafted IOCTL request to IOCTL 0xb2c80018.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows 4.8.1351, and possibly other versions before 4.8.1356, allows local users to cause a denial of service (system crash) and possibly gain privileges via a crafted IOCTL request to IOCTL 0xb2c80018.

Metrics

EPSS Probability

0.95%

56.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Avast	Avast Antivirus Home	4.8.1351
Avast	Avast Antivirus Professional	4.8.1351

References

Timeline

Published: Oct 1, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-3522?

How severe is CVE-2009-3522?

Severity scoring for CVE-2009-3522 is pending analysis. The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2009-3522?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-3522?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST