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CVE-2009-3523

MEDIUM · CVSS 6.9EPSS 0.8%EU EUVD

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.

Key facts

CVSS score
6.9 (v2.0)
Severity
MEDIUM
CVSS vector
AV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE)
CWE-20
EPSS score
0.8% (56th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-3505)
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-2009-3505 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus home
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional
  • avast / avast antivirus professional

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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