CVE-2023-36391
CVE-2023-36391 is a high-severity vulnerability in Microsoft Windows 11 23h2 with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 7% (94th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-59
- Affected product: Microsoft Windows 11 23h2
- Published:
- Last modified:
Description
Local Security Authority Subsystem Service Elevation of Privilege Vulnerability
Frequently asked questions
- What is CVE-2023-36391?
- Local Security Authority Subsystem Service Elevation of Privilege Vulnerability
- How severe is CVE-2023-36391?
- CVE-2023-36391 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-36391 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-36391?
- CVE-2023-36391 affects Microsoft Windows 11 23h2. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-36391?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-36391 published?
- CVE-2023-36391 was published on 2023-12-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
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