CVE-2015-1701Win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 allows local users to gain privileges via a crafted application, as exploited in the wild in…
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It affects microsoft windows_2003_server and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 3, 2022; federal agencies had to remediate by Mar 24, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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Win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 allows local users to gain privileges via a crafted application, as exploited in the wild in April 2015, aka "Win32k Elevation of Privilege Vulnerability."
- CVSS
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Added to CISA KEV Mar 3, 2022; federal remediation due Mar 24, 2022; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 55.92% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Aug 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft windows_2003_server microsoft:windows_2003_server | all versions; r2 | NVD |
microsoft windows_7 microsoft:windows_7 | all versions | NVD |
microsoft windows_server_2008 microsoft:windows_server_2008 | all versions | NVD |
microsoft windows_vista microsoft:windows_vista | all versions | NVD |
References
- http://twitter.com/symantec/statuses/590208710527549440x-refsource-misc, press/media-coverage
- https://www.exploit-db.com/exploits/37049/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- http://www.securityfocus.com/bid/74245vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-051vendor-advisory, x-refsource-ms, patch
- https://www.exploit-db.com/exploits/37367/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://www.fireeye.com/blog/threat-research/2015/04/probable_apt28_useo.htmlx-refsource-misc, third-party-advisory
- http://www.securitytracker.com/id/1032155vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
- http://seclists.org/fulldisclosure/2020/May/34mailing-list, x-refsource-fulldisc, broken-link, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1701us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.