How severe is CVE-2025-21090?

CVE-2025-21090 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-21090 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-21090?

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

Does CVE-2025-21090 have an EU (EUVD) identifier?

Yes. CVE-2025-21090 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24426.

When was CVE-2025-21090 published?

CVE-2025-21090 was published on 2025-08-12 and last updated on 2026-06-17.

CVE-2025-21090

CVE-2025-21090 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-771.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 4.1
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-24426
Weakness: CWE-771
Published: 2025-08-12
Last modified: 2026-06-17

Description

Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.

Frequently asked questions

What is CVE-2025-21090?: Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.
How severe is CVE-2025-21090?: CVE-2025-21090 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-21090 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-21090?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-21090 have an EU (EUVD) identifier?: Yes. CVE-2025-21090 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24426.
When was CVE-2025-21090 published?: CVE-2025-21090 was published on 2025-08-12 and last updated on 2026-06-17.

References

Other CWE-771 vulnerabilities

CVE-2023-20244 — High (CVSS 8.6): A vulnerability in the internal packet processing of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower…
CVE-2021-34720 — High (CVSS 8.6): A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP)…
CVE-2026-3039 — High (CVSS 7.5): BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory…
CVE-2026-20004 — High (CVSS 7.4): A vulnerability in the TLS library of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to…
CVE-2024-56343 — Medium (CVSS 4.3): IBM Verify Identity Access Digital Credentials 24.06 could allow an authenticated user to crash the service with a…

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