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CVE-2025-34026: Versa Concerto Improper Authentication Vulnerability

criticalknown exploitedpublic exploitCVE-2025-34026
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Versaproduct: ConcertoAuthentication bypass
What
The vulnerability allows an attacker to access administrative endpoints due to improper authentication in the Traefik reverse proxy configuration.
Who is affected
Deployments of Versa Concerto SD-WAN orchestration platform are affected.
Urgency
Remediation is urgent as the vulnerability is actively exploited and classified as critical.
Action
Apply the latest security patch provided by Versa.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-01-22
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-34026

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-34026coverage & exploitation statusNVD · CVE.org

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