Use of weak credentials in emergency authentication component in Devolutions Server allows an unauthenticated attacker to bypass authentica…

published 2025-07-22 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-22344

cvss: 7.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

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

Patch / fix

fixed in 1

devolutions devolutions_server 2025.2.4.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 15 mo ago (2025-07-22)

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	9.5	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H
CISA ADP	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CNA	4.0	9.5	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

Devolutions Server

Classification

Weakness

CWE-1391 Use of Weak Credentials

References

devolutions.net /security/advisories/DEVO-2025-0012/
vendor-advisory

Sources

CVE List CVE-2025-6523
NVD CVE-2025-6523

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary