Trivial C# Random Exploitation
Source Reddit NetSec
Rated by Threat Radar
Data as of 19 Aug 2025, 11:02 UTC
What to do
AI-suggested
European organizations should immediately audit their C# applications to identify any use of insecure random number generators like System.Random for security-sensitive purposes. Replace such usage with cryptographically secure random number generators, such as System.Security.Cryptography.RandomNumberGenerator or the newer System.Random implementations designed for cryptographic use (e.g., RandomNumberGenerator.GetBytes). Developers should review all code paths that generate tokens, session IDs, nonces, or keys to ensure they rely on secure randomness. Additionally, organizations should implement secure coding training focused on cryptographic best practices for developers. Monitoring and logging should be enhanced to detect anomalous authentication or token usage patterns that might indicate exploitation attempts. Since no patches are currently available, proactive code remediation is critical. Finally, organizations should stay updated with advisories from Microsoft and security communities for any forthcoming patches or detailed guidance.
Description
Trivial C# Random Exploitation Source: https://blog.doyensec.com/2025/08/19/trivial-exploit-on-C-random.html