How severe is CVE-2025-64388?

CVE-2025-64388 has a CVSS 4.0 base score of 9.2, rated critical severity.

Is CVE-2025-64388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-64388?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-64388 have an EU (EUVD) identifier?

Yes. CVE-2025-64388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37352.

When was CVE-2025-64388 published?

CVE-2025-64388 was published on 2025-10-31 and last updated on 2026-06-17.

CVE-2025-64388

CVE-2025-64388 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.2. 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-400.

Key facts

Severity: Critical (CVSS 4.0 base score 9.2)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37352
Weakness: CWE-400
Published: 2025-10-31
Last modified: 2026-06-17

Description

Denial of service of the web server through specific requests to this protocol

Frequently asked questions

What is CVE-2025-64388?: Denial of service of the web server through specific requests to this protocol
How severe is CVE-2025-64388?: CVE-2025-64388 has a CVSS 4.0 base score of 9.2, rated critical severity.
Is CVE-2025-64388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-64388?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-64388 have an EU (EUVD) identifier?: Yes. CVE-2025-64388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37352.
When was CVE-2025-64388 published?: CVE-2025-64388 was published on 2025-10-31 and last updated on 2026-06-17.

References

Other CWE-400 (Uncontrolled Resource Consumption) vulnerabilities

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