This article discusses a critical security vulnerability (CVE-2025-53690) affecting Sitecore instances, which has been actively exploited in the wild. Organizations, especially FCEB agencies, are urged to update their systems and rotate machine keys to prevent remote code execution. #CVE202553690 #Sitecore #CISA #ViewStateDeserialization #RemoteCodeExecution
Keypoints
- The vulnerability CVE-2025-53690 allows attackers to exploit a deserialization flaw in Sitecore products using default machine keys.
- Active exploitation has been linked to remote code execution, reconnaissance, and lateral movement within compromised networks.
- Threat actors have used publicly available sample machine keys from 2017 deployment guides to facilitate attacks.
- Organizations are advised to rotate ASP.NET machine keys, secure configurations, and monitor environments for signs of compromise.
- Sitecore has implemented automatic key generation for new deployments and contacted affected customers to mitigate risks.
Read More: https://thehackernews.com/2025/09/cisa-orders-immediate-patch-of-critical.html