CVE-2025-34026

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

In the wild

CISA lists this as exploited in real attacks. Treat as urgent.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-04-15 19:15 UTC ReservedThe CVE id was reserved by its CNA
2. 2025-05-21 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-01-22 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
4. 2026-02-12 Remediation deadlineCISA's due date for federal agencies to fix it
5. 2026-06-17 09:13 UTC Last updatedMost recent change to the record

Details

Published

2025-05-21 22:15 UTC

Last modified

2026-06-17 09:13 UTC

Added to CISA KEV

2026-01-22

Exploit probability

81.8% · EPSS, next 30 days

Weakness

CWE-288

Record status

Analyzed

Affected

• versa-networks Concerto < 12.1.2
• versa-networks Concerto 12.1.2
• versa-networks Concerto 12.2.0

Attack profile CVSS 4.0 · 9.2

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

High

Integrity

None

Availability

None