Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-34026

CVE-2025-34026CRITICAL

Versa Concerto Actuator Authentication Bypass Information Leak

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   N   N    9.2   .8194   99.6   YES

AFFECTED
  Product   Versions  Fixed
  Concerto  12.1.2 –  —

TIMELINE
  Apr 15  Reserved by VulnCheck
  May 21  Published (CNA: VulnCheck)
  Jan 22  Added to CISA KEV, remediation due 2026-02-12

CWE-288 · CNA: VulnCheck · CVSS v4.0 · 3 references · KEV due February 12, 2026

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 15, 2025	Reserved	Reserved by VulnCheck
May 21, 2025	Published	Published (CNA: VulnCheck)
January 22, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-02-12

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Versa	Concerto	—	12.1.2	—

Weaknesses

CWE-288

References (3)

https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce [exploit, mitigation]
https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e [vendor-advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026 [government-resource]

Authoritative record: CVE-2025-34026 at cve.org

Vendors: versa

Weaknesses: CWE-288

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-34026 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.