CVE-2025-62593: Ray-Project Ray Code Injection Vulnerability

CVE-2025-62593 is a code injection vulnerability in Ray-Project Ray that can lead to remote code execution. CISA notes that developers using Ray as a development tool may be exposed, with exploitation possible through Firefox and Safari. Teams that run Ray in development or related environments should treat this as a priority for inventory and remediation, confirming all product-specific details against the vendor advisory.

Because the flaw can enable remote code execution, successful abuse could let an attacker run unauthorized code in the context of the affected Ray deployment. Known ransomware use is not documented for this CVE. Follow vendor instructions and applicable CISA BOD 26-04 guidance when prioritizing fixes.

How it works

This issue is tracked under CWE-94 (code injection) and CWE-352 (cross-site request forgery). In broad terms for this class of weakness, code injection means untrusted input can be interpreted or executed as code rather than handled only as data. CSRF-class issues mean a victim’s browser may be induced to send requests the application treats as legitimate, often while the user is authenticated or in an active session.

According to the CISA summary, the vulnerability could allow remote code execution, and developers using Ray as a development tool may be exposed through Firefox and Safari. Exact request paths, parameters, or exploit mechanics are not provided here; defenders should not assume a particular payload or browser-only path without reading the vendor advisory. In practice, an attacker would aim to cause the Ray component to execute attacker-controlled code, potentially with the privileges of the Ray process or the developer environment in which it runs.

Am I affected? How to find it in your systems

Ray-Project Ray is commonly used for distributed Python workloads, ML/training pipelines, and local or cluster development setups. It may appear on developer workstations, CI runners, research clusters, and application environments that embed or launch Ray.

• Inventory hosts and containers for Ray packages, services, dashboards, or CLI tools; check software bills of materials, package managers, and orchestration manifests for Ray-Project Ray components.
• Identify versions and deployment modes in use, then compare them to the fixed and affected ranges in the vendor advisory—do not rely on version lists from secondary sources alone.
• Note where Ray is reachable from browsers or developer networks, especially if developers use Firefox or Safari against local or remote Ray interfaces, as called out in the CISA summary.
• Review configuration for exposed APIs, dashboards, job-submission endpoints, or development servers that accept untrusted input or cross-origin browser traffic.
• For exploitation signs, monitor process creation from Ray workers or head nodes, unexpected outbound connections, anomalous job submissions, and web/application logs showing unusual request patterns tied to Ray management or job APIs. Specific IoCs are not provided in the given facts; tune detection after reading the vendor and CISA materials.

How to remediate

Patch first. Apply the vendor-supplied update or mitigation for CVE-2025-62593 exactly as described in the official Ray-Project advisory. Confirm fixed versions, upgrade steps, and any required configuration changes directly from that advisory.

• Schedule upgrades across developer machines, shared clusters, and production systems that embed Ray; rebuild images and redeploy so old binaries do not remain in use.
• After upgrading, restart Ray services and dependent jobs so the patched code is loaded.
• Harden for this weakness class: reduce trust in browser-originated or cross-site requests to management and job APIs; enforce strong authentication and CSRF protections where the product supports them; avoid running Ray processes with excess privileges; and restrict who can submit jobs or reach control interfaces.
• Align with CISA’s required action: apply mitigations per vendor instructions, follow BOD 26-04 risk-based prioritization and forensics triage expectations, evaluate internet exposure of each asset, and discontinue use if adequate mitigations are unavailable.

If you can't patch immediately

Until the vendor fix is deployed, reduce exposure with compensating controls appropriate to code-injection and CSRF-class risks on developer-facing tooling.

• Segment Ray head nodes, dashboards, and job APIs away from general user networks and the internet; allow access only from tightly controlled admin or developer jump paths.
• Disable or block unused web UIs, development servers, or job-submission features if your deployment does not require them.
• Place a reverse proxy or WAF in front of any browser-reachable Ray interface to enforce authentication, origin/referrer checks, and virtual patching rules once the vendor or your security team publishes reliable signatures—validate rules so legitimate workflows are not broken.
• Require non-browser, authenticated clients for administrative actions where possible; log and alert on process execution and new network listeners spawned by Ray-related users.
• Increase monitoring and retain logs for forensic triage consistent with CISA guidance until patching is complete.

If your data may have been exposed

Actively exploited remote code execution flaws can lead to full host or environment compromise and later data theft, even when ransomware use is not documented for this CVE. If you suspect exploitation, isolate affected systems, preserve logs and memory where feasible, rotate credentials and secrets accessible from those hosts, and follow your incident response process plus CISA forensics triage expectations. You can also run a free exposure scan of your email addresses against known breach datasets to see whether associated accounts appear in prior public breach collections while you complete containment and recovery.