How severe is CVE-2025-30064?

CVE-2025-30064 has a CVSS 4.0 base score of 8.8, rated high severity.

Is CVE-2025-30064 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-30064?

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-2025-30064 have an EU (EUVD) identifier?

Yes. CVE-2025-30064 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27774.

When was CVE-2025-30064 published?

CVE-2025-30064 was published on 2025-08-27 and last updated on 2026-06-17.

CVE-2025-30064

CVE-2025-30064 is a high-severity vulnerability with a CVSS 4.0 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-347.

Key facts

Severity: High (CVSS 4.0 base score 8.8)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27774
Weakness: CWE-347
Published: 2025-08-27
Last modified: 2026-06-17

Description

An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService function to generate a session for any user.

Frequently asked questions

What is CVE-2025-30064?: An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService function to generate a session for any user.
How severe is CVE-2025-30064?: CVE-2025-30064 has a CVSS 4.0 base score of 8.8, rated high severity.
Is CVE-2025-30064 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-30064?: 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-2025-30064 have an EU (EUVD) identifier?: Yes. CVE-2025-30064 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27774.
When was CVE-2025-30064 published?: CVE-2025-30064 was published on 2025-08-27 and last updated on 2026-06-17.

References

https://cert.pl/en/posts/2025/08/CVE-2025-2313/

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