Vulnerability Description
The Versa Concerto SD-WAN orchestration platform is vulnerable to an authentication bypass in the Traefik reverse proxy configuration, allowing at attacker to access administrative endpoints. The Spack upload endpoint can be leveraged for a Time-of-Check to Time-of-Use (TOCTOU) write in combination with a race condition to achieve remote code execution via path loading manipulation, allowing an unauthenticated actor to achieve remote code execution (RCE).This issue is known to affect Concerto from 12.1.2 through 12.2.0. Additional versions may be vulnerable.
Related Weaknesses (CWE)
References
- https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce
- https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce
FAQ
What is CVE-2025-34027?
CVE-2025-34027 is a documented vulnerability. The Versa Concerto SD-WAN orchestration platform is vulnerable to an authentication bypass in the Traefik reverse proxy configuration, allowing at attacker to access administrative endpoints. The Spac...
How severe is CVE-2025-34027?
CVSS scoring is not yet available for CVE-2025-34027. Check NVD for updates.
Is there a patch for CVE-2025-34027?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.