Historical catalog analysis: CISA added this entry on January 22, 2026. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.
What the vulnerability is
CVE-2025-34026 is an improper authentication vulnerability (CWE-288) affecting the Versa Concerto SD-WAN orchestration platform. The flaw resides in the configuration of the Traefik reverse proxy, which fails to properly restrict access to administrative endpoints. Specifically, this allows an attacker to reach the internal Actuator endpoint, providing a path to retrieve system heap dumps and trace logs.
Exposure and applicability
This vulnerability applies to organizations utilizing Versa Concerto for SD-WAN orchestration where the Traefik reverse proxy is deployed in a configuration that exposes administrative endpoints to unauthorized users. The primary risk is the exposure of sensitive system data via the Actuator endpoint, which could provide an attacker with internal system state information through heap dumps and logs.
Remediation priorities
Based on our analysis, vulnerability management teams should prioritize the following actions:
- Identify Exposed Assets: Locate all Versa Concerto instances within the environment to determine if they are utilizing the affected Traefik configuration.
- Apply Vendor Mitigations: Implement the specific corrective actions provided in the vendor’s security instructions to secure the reverse proxy configuration.
- Evaluate Product Viability: In scenarios where mitigations cannot be applied or are unavailable, evaluate whether to discontinue use of the product to eliminate the exposure.
How to validate remediation
Verification must go beyond a simple version check. To ensure that exposure has been reduced, defenders should verify that the administrative endpoints—specifically the Actuator endpoint used for heap dumps and trace logs—are no longer accessible from unauthorized network segments or without proper authentication. Validation is achieved when the Traefik reverse proxy successfully denies requests to these internal endpoints.
Limits and open questions
While the vulnerability is documented, it remains unknown whether this flaw has been leveraged by ransomware campaigns. Furthermore, while vendor mitigations are the primary path to resolution, there may be residual risk if other configuration errors exist within the orchestration platform’s proxy layer. Defenders should note that CISA-mandated deadlines apply specifically to covered federal agencies and do not automatically dictate timelines for private sector organizations.
Source and editorial note
CVE-2025-34026: Versa Concerto Improper Authentication Vulnerability · Source date: January 22, 2026 · Retrieved August 31, 2026.
Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.
Archive date: January 25, 2026. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: September 23, 2026 at 00:24 UTC.
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