All vulnerabilities
CVE-2025-34026

Versa Concerto Improper Authentication Vulnerability

Versa Concerto
Open in ThreatlineRecord JSON
CVSS
9.2Critical
ExploitationExploited in the wildAdded to KEV 22 Jan 2026CISA KEV
Exploit odds (EPSS)81.8%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline12 Feb 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 21 May 2025, 22:04 UTCPublishedCVE List
  2. 22 Jan 2026Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateVersa Concerto Actuator Endpoint - Authentication BypassNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Versa Concerto SD-WAN orchestration platform contains an improper authentication vulnerability 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.

Text from CVE List

Affected versions 1

  • Concertoaffected: 12.1.2 through 12.2.0CVE List

References 4