Versa Concerto - Authentication Bypass (CVE-2025-34026)
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.
psychologyCrowdSec Analysis
CVE-2025-34026 is a critical vulnerability impacting the Versa Concerto SD-WAN orchestration platform, resulting from an authentication bypass in the reverse proxy configuration. This flaw enables attackers to access sensitive administrative endpoints, potentially exposing heap dumps and trace logs via the internal Actuator interface.
CrowdSec has been tracking this vulnerability and its exploits since 28th of May 2025.
CrowdSec network observations suggest that most exploitation of CVE-2025-34026 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2025-34026 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2025-34026 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.
Observed exploitation attempts often target URLs containing /portalapi/actuator.
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| Event | Date |
|---|---|
| CVE Published | 2025-05-21 |
| Rule Released | 2025-05-28 |
| CrowdSec First Seen | 2025-05-28 |
| CISA KEV | 2026-01-22 |
| CISA Remediation Deadline | 2026-02-12 |