How severe is CVE-2024-21435?

CVE-2024-21435 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21435 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21435?

CVE-2024-21435 primarily affects Microsoft Windows 11 22h2. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-21435?

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-2024-21435 have an EU (EUVD) identifier?

Yes. CVE-2024-21435 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19144.

When was CVE-2024-21435 published?

CVE-2024-21435 was published on 2024-03-12 and last updated on 2026-06-17.

CVE-2024-21435

CVE-2024-21435 is a high-severity vulnerability in Microsoft Windows 11 22h2 with a CVSS 3.x base score of 8.8. 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-426.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19144
Weakness: CWE-426
Affected product: Microsoft Windows 11 22h2
Published: 2024-03-12
Last modified: 2026-06-17

Description

Windows OLE Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2024-21435?: Windows OLE Remote Code Execution Vulnerability
How severe is CVE-2024-21435?: CVE-2024-21435 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21435 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21435?: CVE-2024-21435 primarily affects Microsoft Windows 11 22h2. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-21435?: 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-2024-21435 have an EU (EUVD) identifier?: Yes. CVE-2024-21435 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19144.
When was CVE-2024-21435 published?: CVE-2024-21435 was published on 2024-03-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21435

Affected products (4)

cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*

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