win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly handle window messaging, which allows local users to gain privileges via a crafted application that calls the PostMessage function, aka "PostMessage Function Vulnerability."
Published Mar 13, 2012
8.4
HIGHCVSS 3.1
EPSS 1.44%
Description
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly handle window messaging, which allows local users to gain privileges via a crafted application that calls the PostMessage function, aka "PostMessage Function Vulnerability."
Affected products
No data.
- n/a
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- r2
- r2
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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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Jan 10, 2024 · SSVC 2.0.3
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.44% (0.01440) | 72.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.44% (0.01440) | 69.63th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.39% (0.01389) | 79.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00052) | 22.08th | v3 (v2023.03.01) |
| Jul 20, 2024 | 0.05% (0.00052) | 20.74th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.06% (0.00057) | 23.76th | v3 (v2023.03.01) |
| Apr 1, 2024 | 0.06% (0.00057) | 21.75th | v3 (v2023.03.01) |
| Feb 7, 2024 | 0.05% (0.00054) | 19.33th | v3 (v2023.03.01) |
| Dec 11, 2023 | 0.06% (0.00060) | 23.63th | v3 (v2023.03.01) |
| Oct 12, 2023 | 0.07% (0.00067) | 27.96th | v3 (v2023.03.01) |
| Aug 9, 2023 | 0.10% (0.00097) | 39.80th | v3 (v2023.03.01) |
| Jun 7, 2023 | 0.11% (0.00108) | 42.48th | v3 (v2023.03.01) |
| Apr 7, 2023 | 0.12% (0.00122) | 45.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 11.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.77% (0.01773) | 76.63th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.77% (0.01773) | 76.58th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.77% (0.01773) | 74.52th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.77% (0.01773) | 53.76th | v2 (v2022.01.01) |
References (4)
- http://osvdb.org/80002 vdb-entryx_refsource_OSVDB
- http://www.us-cert.gov/cas/techalerts/TA12-073A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-018 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14217 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/80002 | vdb-entryx_refsource_OSVDB | |
| http://www.us-cert.gov/cas/techalerts/TA12-073A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-018 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14217 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.