{
  "id": "CVE-2025-34026",
  "url": "https://spydr.io/cve/CVE-2025-34026",
  "published": "2025-05-21T22:15:50.510Z",
  "modified": "2026-06-17T09:13:19.833Z",
  "score": 9.2,
  "severity": "critical",
  "cvss_version": "4.0",
  "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "score_source": "vulncheck.com",
  "epss": 0.8194,
  "epss_percentile": 0.99643,
  "exploited": true,
  "kev": {
    "added": "2026-01-22",
    "due": "2026-02-12",
    "action": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Versa Concerto Improper Authentication Vulnerability",
    "notes": "https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e ; https://nvd.nist.gov/vuln/detail/CVE-2025-34026"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Versa"
  ],
  "products": [
    "Versa Concerto"
  ],
  "cwes": [
    "CWE-288"
  ],
  "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.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": 9.2,
    "cvss_v31": 7.5,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-34026",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}