How severe is CVE-2025-26788?

CVE-2025-26788 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-26788 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-26788?

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-2025-26788 have an EU (EUVD) identifier?

Yes. CVE-2025-26788 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4243.

When was CVE-2025-26788 published?

CVE-2025-26788 was published on 2025-02-14 and last updated on 2026-06-17.

CVE-2025-26788

CVE-2025-26788 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. 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-639.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4243
Weakness: CWE-639
Published: 2025-02-14
Last modified: 2026-06-17

Description

StrongKey FIDO Server before 4.15.1 treats a non-discoverable (namedcredential) flow as a discoverable transaction.

Frequently asked questions

What is CVE-2025-26788?: StrongKey FIDO Server before 4.15.1 treats a non-discoverable (namedcredential) flow as a discoverable transaction.
How severe is CVE-2025-26788?: CVE-2025-26788 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-26788 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-26788?: 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-2025-26788 have an EU (EUVD) identifier?: Yes. CVE-2025-26788 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4243.
When was CVE-2025-26788 published?: CVE-2025-26788 was published on 2025-02-14 and last updated on 2026-06-17.

References

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