CVE-2025-6523
Use of weak credentials in emergency authentication component in Devolutions Server allows an...
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
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
- Record
CVE-2025-6523- CVSS 4.0
- 9.5 Critical
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 - CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1391
- Updated
- 2026-11-02
EUVDEUVD-2025-22344
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
- Record
EUVD-2025-22344- CVSS 4.0
- 9.5 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qmwg-p2m2-4r2x
Use of weak credentials in emergency authentication component in Devolutions Server allows an...
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
- Record
GHSA-qmwg-p2m2-4r2x- CVSS 4.0
- 9.5 Critical
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 - CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1391
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2025-6523- CVSS 4.0
- 9.5 Critical
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 - CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1391
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-6523 is a critical vulnerability (CVSS 9.5) in Devolutions Server, published July 22, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. No source names a fixed version.