CVE-2023-21800
CVE-2023-21800 is a high-severity vulnerability in Microsoft Windows Server 2008 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-73.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-73
- Affected product: Microsoft Windows Server 2008
- Published:
- Last modified:
Description
Windows Installer Elevation of Privilege Vulnerability
Frequently asked questions
- What is CVE-2023-21800?
- Windows Installer Elevation of Privilege Vulnerability
- How severe is CVE-2023-21800?
- CVE-2023-21800 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-2023-21800 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-21800?
- CVE-2023-21800 primarily affects Microsoft Windows Server 2008. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-21800?
- 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-2023-21800 published?
- CVE-2023-21800 was published on 2023-02-14 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
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