Risk Letters

Exploited vulnerability

CVE-2025-34026

TLP:CLEAR

Versa Concerto Improper Authentication Vulnerability

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.

Facts

  • Vendor: Versa
  • Product: Concerto
  • CVSS: 9.2
  • EPSS (probability of exploitation within 30 days): 81.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 22 January 2026
  • First known exploitation: 22 January 2026
  • CISA's deadline for US federal agencies: 12 February 2026
  • Weakness: CWE-288
  • First seen by Risk Letters: 22 January 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD