How severe is CVE-2025-26340?

CVE-2025-26340 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-26340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26340?

CVE-2025-26340 affects Q-free Maxtime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-26340?

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-2025-26340 have an EU (EUVD) identifier?

Yes. CVE-2025-26340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4152.

When was CVE-2025-26340 published?

CVE-2025-26340 was published on 2025-02-12 and last updated on 2026-06-17.

CVE-2025-26340

CVE-2025-26340 is a high-severity vulnerability in Q-free Maxtime with a CVSS 3.x 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-321.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4152
Weakness: CWE-321
Affected product: Q-free Maxtime
Published: 2025-02-12
Last modified: 2026-06-17

Description

A CWE-321 "Use of Hard-coded Cryptographic Key" in the JWT signing in Q-Free MaxTime less than or equal to version 2.11.0 allows an unauthenticated remote attacker to bypass the authentication via crafted HTTP requests.

Frequently asked questions

What is CVE-2025-26340?: A CWE-321 "Use of Hard-coded Cryptographic Key" in the JWT signing in Q-Free MaxTime less than or equal to version 2.11.0 allows an unauthenticated remote attacker to bypass the authentication via crafted HTTP requests.
How severe is CVE-2025-26340?: CVE-2025-26340 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-26340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26340?: CVE-2025-26340 affects Q-free Maxtime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-26340?: 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-2025-26340 have an EU (EUVD) identifier?: Yes. CVE-2025-26340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4152.
When was CVE-2025-26340 published?: CVE-2025-26340 was published on 2025-02-12 and last updated on 2026-06-17.

References

https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-26340

Affected products (1)

cpe:2.3:a:q-free:maxtime:*:*:*:*:*:*:*:*

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