# CVE-2025-62593: Ray-Project Ray RCE Exploited In Wild

> CISA confirms active exploitation of CVE-2025-62593, a critical code injection vulnerability in Ray-Project Ray allowing remote code execution. Developers are targeted.

- Published: 2026-08-17T16:20:50.000Z
- Severity: critical
- Category: Vulnerabilities
- Tags: Remote Code Execution, RCE, CISA KEV, CVE-2025-62593, Ray Project
- CVEs: CVE-2025-62593
- Author: Runtime Rebel Intel
- Primary source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-62593
- Canonical: https://runtimerebel.com/blog/cve-2025-62593-ray-project-ray-rce-exploited-in-wild

## Key points

- CVE-2025-62593 allows remote code execution in Ray-Project Ray, actively exploited in the wild by threat actors.
- Developers using Ray-Project Ray as a development tool are exposed to this critical code injection vulnerability.
- Apply vendor-provided mitigations immediately or discontinue use of the product if no fixes are available.

## Critical Remote Code Execution [Vulnerability](/glossary#vulnerability) in Ray-Project Ray ([CVE](/glossary#cve)-2025-62593) Under Active Exploitation

Runtime Rebel is issuing an urgent advisory regarding [CVE-2025-62593](https://nvd.nist.gov/vuln/detail/CVE-2025-62593), a critical [code injection](/glossary#code-injection) vulnerability affecting Ray-Project Ray, an open-source unified framework for scaling [AI](/glossary#ai) and Python applications. The [Cybersecurity and Infrastructure Security Agency (CISA)](/glossary#cybersecurity-and-infrastructure-security-agency-cisa) has added this vulnerability to its Known Exploited Vulnerabilities ([KEV](/glossary#kev)) catalog, confirming active exploitation in the wild as of August 18, 2026. This means that threat actors are actively leveraging this flaw to compromise systems, posing an immediate and significant risk, particularly to developers and organizations utilizing Ray in their development and production environments. The vulnerability allows for remote code execution ([RCE](/glossary#rce)), giving attackers the ability to execute arbitrary code on affected systems.

### Understanding Ray-Project Ray CVE-2025-62593 Exploitation

[CVE-2025-62593](https://nvd.nist.gov/vuln/detail/CVE-2025-62593) is characterized as a code injection flaw, identified with the associated weakness [CWE](/glossary#cwe)-94 (Improper Control of Generation of Code ('Code Injection')) and CWE-352 ([Cross-Site Request Forgery (CSRF)](/glossary#cross-site-request-forgery-csrf)). This combination suggests a complex exploitation chain where an attacker might first leverage CSRF to trigger an action that subsequently leads to arbitrary code injection. The vulnerability specifically targets developers who use Ray as a development tool. According to [CISA](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-62593), the flaw is exploitable through web browsers such as Firefox and Safari, implying that web-facing components or dashboards of the Ray framework accessible via these browsers are likely vectors for attack. Attackers [exploit](/glossary#exploit) Ray-Project Ray CVE-2025-62593 to gain unauthorized control over development instances, which could then be used as launchpads for further attacks, [data exfiltration](/glossary#data-exfiltration), or even supply chain compromise if these development environments are linked to production pipelines.

The inclusion of this CVE in CISA's KEV catalog underscores its severity and the imperative for immediate action. Active exploitation confirms that adversaries possess reliable methods to compromise vulnerable Ray installations, making it a high-priority threat for any organization that relies on the framework. The potential for RCE in a development tool is particularly concerning, as it can expose sensitive intellectual property, access credentials, and allow for the introduction of malicious code into applications under development.

### Urgent Ray-Project Ray Code Injection Mitigation Steps and Recommendations

Organizations and individual developers running Ray-Project Ray must prioritize remediation efforts to protect against active threats. The federal remediation due date for this vulnerability is August 21, 2026, highlighting the urgency for all affected entities to act without delay. Runtime Rebel strongly advises the following actionable recommendations:

*   **Apply Vendor Mitigations:** Immediately apply all available security updates and mitigations provided by the Ray-Project vendor. This is the most direct and effective way to address the vulnerability.
*   **Adhere to CISA BOD 26-04:** Ensure compliance with CISA's Binding Operational Directive (BOD) 26-04, which mandates federal agencies to prioritize security updates based on risk. This guidance is applicable to all organizations managing significant cyber risk.
*   **Evaluate Internet Exposure:** Conduct a thorough evaluation of each Ray-Project Ray asset's internet exposure. Minimize external exposure of development tools and environments. Secure all web-facing interfaces with strong authentication and access controls.
*   **Implement [Network Segmentation](/glossary#network-segmentation):** Isolate development environments, particularly those running Ray, from critical production systems and sensitive data networks to limit [lateral movement](/glossary#lateral-movement) in case of compromise.
*   **Discontinue Use if Unmitigated:** If vendor-provided mitigations are unavailable or cannot be immediately applied, discontinue the use of the product until a secure solution is in place. This is a critical step to prevent ongoing exploitation.
*   **Review Forensics Triage Requirements:** Familiarize yourself with CISA’s “Forensics Triage Requirements” to prepare for potential incident response, should an exploitation occur.

Following this patching guidance for CVE-2025-62593 is not merely a compliance exercise but a critical security measure to prevent adversaries from gaining RCE capabilities within your development infrastructure. Proactive patching and stringent security practices are essential to defend against the confirmed active exploitation of this critical vulnerability.

**Related:** [CVE-2026-8037: Progress LoadMaster Command Injection RCE](/blog/cve-2026-8037-progress-loadmaster-command-injection-rce), [CVE-2026-58644: SharePoint RCE Zero-Day Exploited in the Wild](/blog/cve-2026-58644-sharepoint-rce-zero-day-exploited-in-the-wild)

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