CVE-2009-3522
HIGH · CVSS 7.2EPSS 0.9%EU EUVD
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.
Key facts
- CVSS score
- 7.2 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:L/AC:L/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-119
- EPSS score
- 0.9% (61th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-3504)
- Published
- October 1, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-3504 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- avast / avast antivirus home
- avast / avast antivirus professional
References
- http://osvdb.org/58402
- http://secunia.com/advisories/36858(Vendor Advisory)
- http://www.avast.com/eng/avast-4-home_pro-revision-history.html(Vendor Advisory)
- http://www.securityfocus.com/archive/1/506681/100/0/threaded
- http://www.securityfocus.com/bid/36507(Exploit)
- http://www.securitytracker.com/id?1022940
- http://www.vupen.com/english/advisories/2009/2761(Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53456
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6226
- https://www.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.php(Exploit)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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