How severe is CVE-2024-21823?

CVE-2024-21823 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2024-21823 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-21823?

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-2024-21823 have an EU (EUVD) identifier?

Yes. CVE-2024-21823 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19435.

When was CVE-2024-21823 published?

CVE-2024-21823 was published on 2024-05-16 and last updated on 2026-06-17.

CVE-2024-21823

CVE-2024-21823 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-1264.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19435
Weakness: CWE-1264
Published: 2024-05-16
Last modified: 2026-06-17

Description

Hardware logic with insecure de-synchronization in Intel(R) DSA and Intel(R) IAA for some Intel(R) 4th or 5th generation Xeon(R) processors may allow an authorized user to potentially enable escalation of privilege local access

Frequently asked questions

What is CVE-2024-21823?: Hardware logic with insecure de-synchronization in Intel(R) DSA and Intel(R) IAA for some Intel(R) 4th or 5th generation Xeon(R) processors may allow an authorized user to potentially enable escalation of privilege local access
How severe is CVE-2024-21823?: CVE-2024-21823 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2024-21823 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-21823?: 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-2024-21823 have an EU (EUVD) identifier?: Yes. CVE-2024-21823 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19435.
When was CVE-2024-21823 published?: CVE-2024-21823 was published on 2024-05-16 and last updated on 2026-06-17.

References

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