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CVE-2023-28229: Microsoft Windows CNG Key Isolation Service Privilege Escalation Vulnerability

criticalknown exploitedpublic exploitCVE-2023-28229
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 Windows Cryptographic Next Generation (CNG) Key Isolation Service contains an unspecified vulnerability that allows an attacker to gain specific limited SYSTEM privileges.

CSIRTS triage

vendor: Microsoftproduct: WindowsPrivilege escalation
What
An unspecified vulnerability allows an attacker to gain specific limited SYSTEM privileges.
Who is affected
Users of Microsoft Windows operating systems.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Install 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
2023-10-04
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-28229

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-2023-28229coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Windows CNG

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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