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CVE-2017-0263: Microsoft Win32k Privilege Escalation Vulnerability

criticalknown exploitedpublic exploitCVE-2017-0263
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Win32k contains a privilege escalation vulnerability due to the Windows kernel-mode driver failing to properly handle objects in memory.

CSIRTS triage

vendor: Microsoftproduct: Win32kPrivilege escalation
What
The Win32k component contains a privilege escalation vulnerability due to improper handling of objects in memory.
Who is affected
Users of Microsoft Windows with the affected Win32k component are affected.
Urgency
Remediation is urgent due to the critical severity and exploitation status.
Action
Install the latest security patches for Windows.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-02-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-0263

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2017-0263coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Win32k Privilege

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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