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 validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka "Win32k Null Pointer De-reference Vulnerability."
Published Oct 12, 2011
7.1
HIGHCVSS 3.1
EPSS 2.27%
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 validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka "Win32k Null Pointer De-reference Vulnerability."
Affected products
No data.
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
- n/a
- n/a
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:L/UI:N/S:U/C:H/I:N/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
PartialDecision
n/aAssessed Jan 21, 2025 · 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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.27% (0.02270) | 82.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.39% (0.02386) | 81.70th | v5 (v2026.06.15) |
| Jan 29, 2026 | 3.37% (0.03372) | 87.04th | v4 (v2025.03.14) |
| Sep 2, 2025 | 4.93% (0.04926) | 89.27th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.98% (0.05977) | 89.72th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.21% (0.01212) | 66.37th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.17% (0.05166) | 89.15th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00049) | 20.82th | v3 (v2023.03.01) |
| May 1, 2024 | 0.05% (0.00049) | 17.63th | v3 (v2023.03.01) |
| Feb 18, 2024 | 0.05% (0.00049) | 15.63th | v3 (v2023.03.01) |
| Jul 10, 2023 | 0.05% (0.00054) | 19.76th | v3 (v2023.03.01) |
| May 11, 2023 | 0.06% (0.00058) | 21.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00051) | 18.08th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.12% (0.02116) | 80.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.12% (0.02116) | 78.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.12% (0.02116) | 56.79th | v2 (v2022.01.01) |
References (3)
- http://www.securitytracker.com/id?1026165 vdb-entryx_refsource_SECTRACK
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12935 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id?1026165 | vdb-entryx_refsource_SECTRACK | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12935 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.