How severe is CVE-2025-6523?

CVE-2025-6523 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-6523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6523?

CVE-2025-6523 affects Devolutions Devolutions Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6523?

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-2025-6523 have an EU (EUVD) identifier?

Yes. CVE-2025-6523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22344.

When was CVE-2025-6523 published?

CVE-2025-6523 was published on 2025-07-22 and last updated on 2026-06-17.

CVE-2025-6523

CVE-2025-6523 is a high-severity vulnerability in Devolutions Devolutions Server with a CVSS 3.x base score of 7.7. 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-1391.

Key facts

Severity: High (CVSS 3.x base score 7.7)
CVSS v4: 9.5
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22344
Weakness: CWE-1391
Affected product: Devolutions Devolutions Server
Published: 2025-07-22
Last modified: 2026-06-17

Description

Use of weak credentials in emergency authentication component in Devolutions Server allows an unauthenticated attacker to bypass authentication via brute forcing the short emergency codes generated by the server within a feasible timeframe. This issue affects the following versions : * Devolutions Server 2025.2.2.0 through 2025.2.3.0 * Devolutions Server 2025.1.11.0 and earlier

Frequently asked questions

What is CVE-2025-6523?: Use of weak credentials in emergency authentication component in Devolutions Server allows an unauthenticated attacker to bypass authentication via brute forcing the short emergency codes generated by the server within a feasible timeframe. This issue affects the following versions : * Devolutions Server 2025.2.2.0 through 2025.2.3.0 * Devolutions Server 2025.1.11.0 and earlier
How severe is CVE-2025-6523?: CVE-2025-6523 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-6523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6523?: CVE-2025-6523 affects Devolutions Devolutions Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6523?: 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-2025-6523 have an EU (EUVD) identifier?: Yes. CVE-2025-6523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22344.
When was CVE-2025-6523 published?: CVE-2025-6523 was published on 2025-07-22 and last updated on 2026-06-17.

References

https://devolutions.net/security/advisories/DEVO-2025-0012/

Affected products (1)

cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:*

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