Use-after-free vulnerability in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2 and Server 2008 Gold and SP2 allows local users to gain privileges or cause a denial of service (system crash) by using a large number of calls to the NtUserCheckAccessForIntegrityLevel function to trigger a failure in the LockProcessByClientId function, leading to deletion of an in-use process object, aka "Win32k Reference Count Vulnerability."
Published Jul 2, 2010
7.2
HIGHCVSS 2.0
EPSS 5.15%
Description
Use-after-free vulnerability in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2 and Server 2008 Gold and SP2 allows local users to gain privileges or cause a denial of service (system crash) by using a large number of calls to the NtUserCheckAccessForIntegrityLevel function to trigger a failure in the LockProcessByClientId function, leading to deletion of an in-use process object, aka "Win32k Reference Count Vulnerability."
Affected products
No data.
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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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.15% (0.05145) | 92.16th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.15% (0.05145) | 91.31th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.81% (0.03812) | 87.04th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.48% (0.01484) | 69.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.81% (0.03812) | 87.33th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00043) | 11.60th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.04% (0.00043) | 9.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 7.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.22% (0.02220) | 81.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.22% (0.02220) | 79.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.22% (0.02220) | 58.07th | v2 (v2022.01.01) |
References (8)
- http://osvdb.org/66003 vdb-entryx_refsource_OSVDB
- http://seclists.org/fulldisclosure/2010/Jul/3 mailing-listx_refsource_FULLDISCExploit
- http://secunia.com/advisories/40421 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.exploit-db.com/exploits/14156 exploitx_refsource_EXPLOIT-DB
- http://www.securityfocus.com/bid/41280 vdb-entryx_refsource_BIDExploit
- http://www.us-cert.gov/cas/techalerts/TA10-285A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://exchange.xforce.ibmcloud.com/vulnerabilities/60120 vdb-entryx_refsource_XF
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12215 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/66003 | vdb-entryx_refsource_OSVDB | |
| http://seclists.org/fulldisclosure/2010/Jul/3 | mailing-listx_refsource_FULLDISCExploit | |
| http://secunia.com/advisories/40421 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.exploit-db.com/exploits/14156 | exploitx_refsource_EXPLOIT-DB | |
| http://www.securityfocus.com/bid/41280 | vdb-entryx_refsource_BIDExploit | |
| http://www.us-cert.gov/cas/techalerts/TA10-285A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/60120 | vdb-entryx_refsource_XF | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12215 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.