Authentication Bypass Vulnerability in Versa Concerto SD-WAN Orchestration Platform
CVE-2025-34026

9.2CRITICAL

Key Information:

Vendor

Versa

Status
Concerto
Vendor
CVE Published:
21 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-34026?

The Versa Concerto SD-WAN orchestration platform contains a vulnerability that allows an attacker to bypass authentication due to a misconfiguration in the Traefik reverse proxy. This flaw potentially grants access to sensitive administrative endpoints, enabling unauthorized access to sensitive internal data, such as heap dumps and trace logs. Affected versions include Concerto from 12.1.2 to 12.2.0, with other versions possibly impacted as well. Organizations using this platform must take immediate steps to mitigate this vulnerability.

Affected Version(s)

Concerto 12.1.2 <= 12.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-34026 - Proof of Concept

References

https://projectdiscovery.io/blog/versa-concerto-authentic...
exploitmitigation

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ProjectDiscovery
Harsh Jaiswal
Rahul Maini
Parth Malhotra
.
The Cyber Security Vulnerability Database.