How severe is CVE-2024-21305?

CVE-2024-21305 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-21305 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21305?

CVE-2024-21305 primarily affects Microsoft Windows 10 1809. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-21305?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21305 have an EU (EUVD) identifier?

Yes. CVE-2024-21305 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19018.

When was CVE-2024-21305 published?

CVE-2024-21305 was published on 2024-01-09 and last updated on 2026-06-17.

CVE-2024-21305

CVE-2024-21305 is a medium-severity vulnerability in Microsoft Windows 10 1809 with a CVSS 3.x base score of 4.4. 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-732.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19018
Weakness: CWE-732
Affected product: Microsoft Windows 10 1809
Published: 2024-01-09
Last modified: 2026-06-17

Description

Hypervisor-Protected Code Integrity (HVCI) Security Feature Bypass Vulnerability

Frequently asked questions

What is CVE-2024-21305?: Hypervisor-Protected Code Integrity (HVCI) Security Feature Bypass Vulnerability
How severe is CVE-2024-21305?: CVE-2024-21305 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-21305 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21305?: CVE-2024-21305 primarily affects Microsoft Windows 10 1809. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-21305?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21305 have an EU (EUVD) identifier?: Yes. CVE-2024-21305 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19018.
When was CVE-2024-21305 published?: CVE-2024-21305 was published on 2024-01-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21305

Affected products (9)

cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*

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