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
Published Oct 1, 2009
6.9
MEDIUMCVSS 2.0
EPSS 0.78%
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
No data.
- ≤ 4.8.1351
- 4.7.827
- 4.7.844
- 4.7.869
- 4.7.1043
- 4.7.1098
- 4.8.1169
- 4.8.1195
- 4.8.1201
- 4.8.1227
- 4.8.1229
- 4.8.1282
- 4.8.1290
- 4.8.1296
- 4.8.1335
- ≤ 4.8.1351
- 4.7.827
- 4.7.844
- 4.7.1043
- 4.7.1098
- 4.8.1169
- 4.8.1195
- 4.8.1201
- 4.8.1227
- 4.8.1229
- 4.8.1282
- 4.8.1290
- 4.8.1296
- 4.8.1335
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.78% (0.00781) | 54.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.78% (0.00781) | 50.97th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.16% (0.00158) | 34.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (4)
- http://secunia.com/advisories/36858 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.avast.com/eng/avast-4-home_pro-revision-history.html x_refsource_CONFIRM
- http://www.ntinternals.org/ntiadv0904/ntiadv0904.html x_refsource_MISCExploit
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6024 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/36858 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.avast.com/eng/avast-4-home_pro-revision-history.html | x_refsource_CONFIRM | |
| http://www.ntinternals.org/ntiadv0904/ntiadv0904.html | x_refsource_MISCExploit | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6024 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.