CVE-2025-6523

Q: How do I fix CVE-2025-6523?

Upgrade devolutions server to 2025.2.4.0 or later.

Q: Is CVE-2025-6523 being actively exploited?

Not that we know of. CVE-2025-6523 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.39% is the estimated probability that it will be exploited in the next 30 days. That is higher than 32% of all scored CVEs.

Q: How severe is CVE-2025-6523?

CVE-2025-6523 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2025-6523 affect?

Published advisories record a fix for devolutions server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

7.7

CVSS v3

NVD

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

CWE-1391

How to fix

Remediation Available

devolutions serverNVD

Affected:>= 2025.2.2.0, < 2025.2.4.0Fixed in:2025.2.4.0CVE-2025-6523derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploit Intelligence

0.39%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Vendor Advisory1

devolutions.net

Related Vulnerabilities

Other CWE-1391 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-51978	Critical	9.8	24%	-	-
CVE-2025-53558	High	8.8	1.4%	-	-
CVE-2024-40892	High	7.1	0.9%	-	-
CVE-2024-12728	Critical	9.8	0.9%	-	Fix
CVE-2024-43659	High	7.2	0.8%	-	-
CVE-2025-6077	Critical	9.8	0.7%	-	-

Common questions

How do I fix CVE-2025-6523?

Upgrade devolutions server to 2025.2.4.0 or later.

Is CVE-2025-6523 being actively exploited?

Not that we know of. CVE-2025-6523 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.39% is the estimated probability that it will be exploited in the next 30 days. That is higher than 32% of all scored CVEs.

How severe is CVE-2025-6523?

CVE-2025-6523 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-6523 affect?

Published advisories record a fix for devolutions server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2025-6523

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-25.