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
Published Oct 1, 2009
7.2
HIGHCVSS 2.0
EPSS 0.95%
Description
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.
Affected products
No data.
- 4.8.1351
- 4.8.1351
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:L/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 1, 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.95% (0.00947) | 59.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.95% (0.00947) | 56.36th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.44% (0.00437) | 60.87th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 12.17th | v3 (v2023.03.01) |
| Jun 27, 2024 | 0.04% (0.00044) | 10.45th | v3 (v2023.03.01) |
| May 25, 2023 | 0.04% (0.00044) | 8.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00053) | 19.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.22% (0.03220) | 84.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.22% (0.03220) | 82.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.22% (0.03220) | 65.30th | v2 (v2022.01.01) |
References (10)
- http://osvdb.org/58402 vdb-entryx_refsource_OSVDB
- 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_CONFIRMVendor Advisory
- http://www.securityfocus.com/archive/1/506681/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/36507 vdb-entryx_refsource_BIDExploit
- http://www.securitytracker.com/id?1022940 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2009/2761 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53456 vdb-entryx_refsource_XF
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6226 vdb-entrysignaturex_refsource_OVAL
- https://www.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.php x_refsource_MISCExploit
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/58402 | vdb-entryx_refsource_OSVDB | |
| 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_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/archive/1/506681/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/36507 | vdb-entryx_refsource_BIDExploit | |
| http://www.securitytracker.com/id?1022940 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2009/2761 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/53456 | vdb-entryx_refsource_XF | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6226 | vdb-entrysignaturex_refsource_OVAL | |
| https://www.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.php | x_refsource_MISCExploit |
Change history (0)
No recorded changes yet.