What’s Vulnerable › Vulnerabilities

CVE-2025-34026: Versa Concerto Improper Authentication Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-01-22
• EPSS: 81.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-05-21 · updated 2026-06-17
• Weakness: CWE-288

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 internal Actuator endpoint can be leveraged for access to heap dumps and trace logs.This issue is known to affect Concerto from 12.1.2 through 12.2.0. Additional versions may be vulnerable.

Affected products

• Versa Concerto: from 11.4.0 before 12.1.2; 12.1.2, 12.2.0 — fixed in 12.1.2

How to fix

Upgrade to a fixed version: Versa Concerto 12.1.2. Check the vendor advisory for mitigations.

References

• https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce
• https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce
• https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026

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