CVE-2009-3523 EXPLOIT
6.9
MEDIUM · CVSS 2.0 · EPSS 0.8% (pctl 55)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 6.9 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:M/Au:N/C:C/I:C/A:C |
| EPSS | 0.78% — more likely to be exploited than 55% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-10-01 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| avast | avast antivirus home |
| avast | avast antivirus professional |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Avast! 4.7 - 'aavmker4.sys' Local Privilege Escalation | 2010-04-27 |
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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