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 2025.1.11.0 and earlier
The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Devolutions_server | Devolutions | * | 2025.1.11.0 (including) |
| Devolutions_server | Devolutions | 2025.2.2.0 (including) | 2025.2.4.0 (excluding) |
By design, authentication protocols try to ensure that attackers must perform brute force attacks if they do not know the credentials such as a key or password. However, when these credentials are easily predictable or even fixed (as with default or hard-coded passwords and keys), then the attacker can defeat the mechanism without relying on brute force. Credentials may be weak for different reasons, such as:
Even if a new, unique credential is intended to be generated for each product installation, if the generation is predictable, then that may also simplify guessing attacks.