A newly discovered critical vulnerability (CVE-2025-2726) affecting multiple H3C Magic series routers allows remote attackers to execute arbitrary commands through crafted HTTP POST requests. With a CVSS score of 8.8 and no available patch from the vendor, this command injection flaw poses significant risks to enterprise networks using affected devices.
Technical Analysis of CVE-2025-2726
The vulnerability resides in the HTTP POST request handler component of H3C Magic series routers, specifically affecting the /api/esps endpoint. Improper input validation allows command injection attacks (CWE-77) that can lead to complete system compromise. Security researchers have confirmed the vulnerability affects multiple router models running firmware versions up to V100R014.
Attack vectors require no authentication in default configurations, making exploitation particularly dangerous for exposed devices. While full technical details remain limited, the public disclosure suggests attackers can inject system commands through manipulated HTTP requests to the vulnerable endpoint.
Affected Products and Risk Assessment
The following H3C Magic series router models running firmware up to V100R014 are confirmed vulnerable:
- Magic NX15
- Magic NX30 Pro
- Magic NX400
- Magic R3010
- Magic BE18000
Successful exploitation could enable attackers to gain persistent access to network infrastructure, intercept sensitive traffic, or use compromised devices as pivot points for lateral movement. The high CVSS score reflects the combination of network-based attack vectors, low attack complexity, and potential for complete system compromise.
Detection and Mitigation Strategies
Organizations should immediately implement the following mitigation measures while awaiting an official patch from H3C:
- Restrict administrative access to router interfaces through network segmentation
- Monitor for unusual POST requests to
/api/espsendpoint - Review router logs for unexpected command execution patterns
- Consider disabling the affected API endpoint if not required for operations
Security teams should prioritize identifying affected devices within their networks. The lack of vendor response increases the urgency for implementing these protective measures.
Security Implications for Enterprises
This vulnerability presents multiple risks for enterprise environments:
- Potential entry point for network penetration through remote worker devices
- Increased attack surface for branch office networks
- Possible data exfiltration through compromised network infrastructure
The appearance of this vulnerability alongside related issues (CVE-2025-2725, CVE-2025-2727) suggests potential systemic security concerns in H3C’s firmware development process that warrant further investigation by security teams.
References
- CVE-2025-2726 – H3C Magic Series HTTP POST Request Handler Command Injection (cvefeed.io)
- CVE-2025-2726 | Tenable® (Tenable)
- CVE-2025-2726 H3C Magic BE18000 HTTP POST Request esps (Vulners)
- H3C Vulnerability Information (GitHub)
- CVE-2025-2725 Detail – NVD (NIST)
