How severe is CVE-2024-21345?

CVE-2024-21345 has a CVSS 3.x base score of 8.8, 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-2024-21345 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21345?

CVE-2024-21345 affects Microsoft Windows Server 2022 23h2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21345?

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.

Does CVE-2024-21345 have an EU (EUVD) identifier?

Yes. CVE-2024-21345 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19057.

When was CVE-2024-21345 published?

CVE-2024-21345 was published on 2024-02-13 and last updated on 2026-06-17.

CVE-2024-21345

CVE-2024-21345 is a high-severity vulnerability in Microsoft Windows Server 2022 23h2 with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19057
Weakness: CWE-122
Affected product: Microsoft Windows Server 2022 23h2
Published: 2024-02-13
Last modified: 2026-06-17

Description

Windows Kernel Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2024-21345?: Windows Kernel Elevation of Privilege Vulnerability
How severe is CVE-2024-21345?: CVE-2024-21345 has a CVSS 3.x base score of 8.8, 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-2024-21345 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21345?: CVE-2024-21345 affects Microsoft Windows Server 2022 23h2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21345?: 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.
Does CVE-2024-21345 have an EU (EUVD) identifier?: Yes. CVE-2024-21345 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19057.
When was CVE-2024-21345 published?: CVE-2024-21345 was published on 2024-02-13 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21345

Affected products (1)

cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*

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