CVE-2025-12548 Red Hat CVE debrief

Who should care

System administrators and security teams using Eclipse Che che-machine-exec, especially those exposed to untrusted networks, should assess exposure and prioritize remediation. This includes reviewing current deployments, understanding the potential operational impacts, and implementing necessary controls to prevent exploitation. Additionally, teams responsible for vulnerability management, incident response, and asset inventory should be engaged to ensure

Why it matters

CVE-2025-12548 is a critical vulnerability in Eclipse Che che-machine-exec that allows unauthenticated remote arbitrary command execution and secret exfiltration. System administrators and security teams using Eclipse Che che-machine-exec, especially those exposed to untrusted networks, should assess exposure and prioritize remediation.

• Unauthenticated remote arbitrary command execution
• Secret exfiltration (SSH keys, tokens, etc.)
• Potential for lateral movement within the network
• Need for immediate remediation and monitoring

Technical summary

The vulnerability in Eclipse Che che-machine-exec allows unauthenticated remote arbitrary command execution and secret exfiltration (SSH keys, tokens, etc.) from other users' Developer Workspace containers via an unauthenticated JSON-RPC / websocket API exposed on TCP port 3333. This is a critical vulnerability that requires immediate attention, especially for systems exposed to untrusted networks. The vulnerability's technical details indicate that it could lead to significant operational impacts if not promptly addressed.

Defensive priority

High priority remediation is recommended for systems using Eclipse Che che-machine-exec, especially those exposed to untrusted networks.

Recommended defensive actions

• Immediately remediate systems using Eclipse Che che-machine-exec, especially those exposed to untrusted networks.
• Restrict access to the JSON-RPC / websocket API exposed on TCP port 3333.
• Monitor for suspicious activity and implement compensating controls to prevent exploitation.
• Review and update incident response plans to address potential lateral movement.
• Conduct a thorough asset inventory to identify exposed systems.
• Implement additional monitoring and detection controls for exposed assets.
• Schedule regular re-assessment of vulnerability exposure and remediation status.

Evidence notes

The vulnerability allows unauthenticated remote arbitrary command execution and secret exfiltration (SSH keys, tokens, etc.) from other users' Developer Workspace containers. The CVE record and NVD entry provide details on the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.