CVEs
CVE-2025-34027
Critical · 10.0—CWE-367Source: NVD
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.
CVSS 3.1 10 Published 5/21/2025
Indicators of compromise
No indicators of compromise recorded. Run AI enrichment to research IOCs.
EPSS
37%
Probability of exploitation in the next 30 days.
Affected products
- Versa CSG2500Feature-conditional
- Versa CSG355Feature-conditional
Public exploits / PoCs
No public PoC repositories found.