How severe is CVE-2023-28246?

CVE-2023-28246 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-2023-28246 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28246?

CVE-2023-28246 primarily affects Microsoft Windows 11 21h2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-28246?

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-2023-28246 published?

CVE-2023-28246 was published on 2023-04-11 and last updated on 2026-06-17.

CVE-2023-28246

CVE-2023-28246 is a high-severity vulnerability in Microsoft Windows 11 21h2 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Microsoft Windows 11 21h2
Published: 2023-04-11
Last modified: 2026-06-17

Description

Windows Registry Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2023-28246?: Windows Registry Elevation of Privilege Vulnerability
How severe is CVE-2023-28246?: CVE-2023-28246 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-2023-28246 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28246?: CVE-2023-28246 primarily affects Microsoft Windows 11 21h2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-28246?: 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-2023-28246 published?: CVE-2023-28246 was published on 2023-04-11 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28246

Affected products (3)

cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Windows 11 21h2

CVE-2024-38199 — Critical (CVSS 9.8): Windows Line Printer Daemon (LPD) Service Remote Code Execution Vulnerability
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CVE-2023-36397 — Critical (CVSS 9.8): Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability
CVE-2023-36028 — Critical (CVSS 9.8): Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability

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