Exploit Published for Fresh Cleo Harmony Vulnerability
BLUF
Active exploits exist for a critical authentication bypass vulnerability in Cleo Harmony.
NEWS
A security defect allowing remote authentication bypass via argument bearer manipulation has been disclosed with published exploit code. This affects organizations using Cleo Harmony for managed file transfers and exposes them to unauthorized access.
Why I Care
Attackers can now compromise file transfer systems without credentials, leading to data theft or system takeover. The public availability of exploits means attacks are likely imminent against unpatched environments.
Next Steps
System administrators must identify all Cleo Harmony instances and apply vendor patches immediately. Isolate affected systems from the network if patching cannot be completed within 24 hours.
Source: Security Week ·