TI-2009-03360 Aliases CVE-2009-3522 GHSA-3r45-7993-xcwr

Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows…

LOW 33CWE-119Published 2009-10-01 · Updated 2024-08-07

Key facts

Attack vector: Local
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: Complete · Complete · Complete
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.00947 61st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:avast:avast_antivirus_home:4.8.1351::windows:::::	4.8.1351	Vulnerable	Avast
cpe:2.3:a:avast:avast_antivirus_professional:4.8.1351::windows:::::	4.8.1351	Vulnerable	Avast

cpe:2.3:a:avast:avast_antivirus_home:4.8.1351:*:windows:*:*:*:*:* Versions 4.8.1351 Vulnerable ·Avast
cpe:2.3:a:avast:avast_antivirus_professional:4.8.1351:*:windows:*:*:*:*:* Versions 4.8.1351 Vulnerable ·Avast

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2009-3522
2026-10-03 Alias added: GHSA-3r45-7993-xcwr

References

Exploit 1

https://www.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.php

Advisory 2

Other 2

TI-2007-01612 unzoo.c, as used in multiple products including AMaViS 2.4.1 and earlier, allows remote… CVSS 2.0HIGH 7.8
TI-2009-03840 Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and… CVSS 2.0HIGH 7.2
TI-2010-00673 Aavmker4.sys in avast! 4.8 through 4.8.1368.0 and 5.0 before 5.0.418.0 running on Windows… CVSS 2.0HIGH 7.2
TI-2007-05973 Unspecified vulnerability in avast! 4 Home and Professional Editions before 4.7.1098… CVSS 2.0MEDIUM 6.8
TI-2009-03362 Unspecified vulnerability in ashWsFtr.dll in avast! Home and Professional for Windows… CVSS 2.0HIGH 7.2
TI-2009-03361 aavmKer4.sys in avast! Home and Professional for Windows before 4.8.1356 does not… CVSS 2.0MEDIUM 6.9

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences