win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 on 64-bit platforms does not properly validate pointers during the parsing of OpenType (aka OTF) fonts, which allows remote attackers to execute arbitrary code via a crafted font file, aka "Win32k OTF Validation Vulnerability."
Published Jun 16, 2011
9.3
HIGHCVSS 2.0
EPSS 18.70%
Description
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 on 64-bit platforms does not properly validate pointers during the parsing of OpenType (aka OTF) fonts, which allows remote attackers to execute arbitrary code via a crafted font file, aka "Win32k OTF Validation Vulnerability."
Affected products
No data.
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
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- 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.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/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 2, 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 2, 2026 | 18.70% (0.18700) | 97.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 18.70% (0.18700) | 96.90th | v5 (v2026.06.15) |
| Dec 28, 2025 | 27.01% (0.27013) | 96.20th | v4 (v2025.03.14) |
| Dec 27, 2025 | 33.77% (0.33768) | 96.82th | v4 (v2025.03.14) |
| Oct 28, 2025 | 27.01% (0.27013) | 96.13th | v4 (v2025.03.14) |
| Oct 27, 2025 | 33.77% (0.33768) | 96.76th | v4 (v2025.03.14) |
| Oct 1, 2025 | 27.01% (0.27013) | 96.22th | v4 (v2025.03.14) |
| Mar 30, 2025 | 33.77% (0.33768) | 96.59th | v4 (v2025.03.14) |
| Mar 29, 2025 | 55.59% (0.55589) | 97.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 33.77% (0.33768) | 96.57th | v4 (v2025.03.14) |
| Dec 12, 2024 | 26.35% (0.26351) | 96.92th | v3 (v2023.03.01) |
| May 14, 2024 | 27.26% (0.27264) | 96.77th | v3 (v2023.03.01) |
| Feb 4, 2024 | 27.77% (0.27772) | 96.41th | v3 (v2023.03.01) |
| Dec 15, 2023 | 25.79% (0.25789) | 96.25th | v3 (v2023.03.01) |
| Oct 23, 2023 | 34.02% (0.34024) | 96.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 28.51% (0.28507) | 96.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 62.36% (0.62357) | 98.96th | v2 (v2022.01.01) |
| Feb 4, 2022 | 62.36% (0.62357) | 98.71th | v2 (v2022.01.01) |
References (6)
- http://secunia.com/advisories/44893 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/bid/48183 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1025638 vdb-entryx_refsource_SECTRACK
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-041 vendor-advisoryx_refsource_MS
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67732 vdb-entryx_refsource_XF
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12725 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/44893 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.securityfocus.com/bid/48183 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1025638 | vdb-entryx_refsource_SECTRACK | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-041 | vendor-advisoryx_refsource_MS | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/67732 | vdb-entryx_refsource_XF | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12725 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.