CVE-2025-34026

HIGH7.5

CISA KEV

Published 2025-05-21 · Updated 2026-06-17 · Source disclosure@vulncheck.com

Summary

CVE-2025-34026 is a high-severity (CVSS 7.5) vulnerability in Versa Concerto. CISA added it to the Known Exploited Vulnerabilities catalog on January 22, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by February 12, 2026. CISA does not currently list it as used in ransomware campaigns. Versa has 2 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 2 known-exploited Versa vulnerabilities →

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-288

CISA Known-Exploited Vulnerability

Product: Versa — Concerto

Name: Versa Concerto Improper Authentication Vulnerability

Date added: 2026-01-22 · Due: 2026-02-12

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

View on NVD

More exploited Versa vulnerabilities

Most recently added to CISA KEV

CVE-2024-39717
Director — Versa Director Dangerous File Type Upload Vulnerability
added 2024-08-23

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