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CVE-2019-1458: Microsoft Win32k Privilege Escalation Vulnerability

criticalknown exploitedpublic exploitCVE-2019-1458
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.
A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k EoP.

CSIRTS triage

vendor: Microsoftproduct: Win32kPrivilege escalation
What
A privilege escalation vulnerability exists when the Win32k component fails to properly handle objects in memory.
Who is affected
Windows users with affected versions.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security updates from Microsoft.

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
2022-01-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-1458

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-2019-1458coverage & 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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