CVEs / CVE-2017-0263
CVE-2017-0263: Microsoft Win32k Privilege Escalation Vulnerability
- Known exploited in the CISA KEV catalog since 10 Feb 2022
- high 7.8 CVSS 3.1 (NVD)
- EPSS 10% chance of exploitation in the next 30 days, higher than 95% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Microsoft Win32k contains a privilege escalation vulnerability due to the Windows kernel-mode driver failing to properly handle objects in memory.
Description
The kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Corporation Microsoft Windows | Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 | — |
Exploitation
| In CISA KEV since | 10 Feb 2022 |
|---|---|
| Due date for US federal agencies | 10 Aug 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2017-0263 on NVD
- CVE-2017-0263 in the CISA KEV catalog
- http://www.securityfocus.com/bid/98258 Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038449 Broken Link, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0263 Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/44478/ Exploit, Third Party Advisory, VDB Entry
- https://xiaodaozhi.com/exploit/117.html Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-0263 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.