CVE-2009-3523

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-10-01 · updated 2026-06-16
Weakness: CWE-20

Description

aavmKer4.sys in avast! Home and Professional for Windows before 4.8.1356 does not properly validate input to IOCTLs (1) 0xb2d6000c and (2) 0xb2d60034, which allows local users to gain privileges via IOCTL requests using crafted kernel addresses that trigger memory corruption, a different vulnerability than CVE-2008-1625.

Affected products

Avast Antivirus Home: through 4.8.1351; 4.7.827, 4.7.844, 4.7.869, 4.7.1043, 4.7.1098, 4.8.1169 (+8)
Avast Antivirus Professional: through 4.8.1351; 4.7.827, 4.7.844, 4.7.1043, 4.7.1098, 4.8.1169, 4.8.1195 (+7)

References

http://secunia.com/advisories/36858
http://www.avast.com/eng/avast-4-home_pro-revision-history.html
http://www.ntinternals.org/ntiadv0904/ntiadv0904.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6024
http://secunia.com/advisories/36858
http://www.avast.com/eng/avast-4-home_pro-revision-history.html
http://www.ntinternals.org/ntiadv0904/ntiadv0904.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6024

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