{"id":"CVE-2025-34026","aliases":["EUVD-2025-16087","GHSA-h2mm-jj4p-hm2p"],"status":"published","title":"Versa Concerto Actuator Authentication Bypass Information Leak","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.","severity":{"version":"4.0","score":9.2,"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-07","score":0.8178,"percentile":0.99647,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-288"],"published":"2025-05-21T22:04:58Z","modified":"2026-06-17T09:13:19Z","kev":{"date_added":"2026-01-22","due_date":"2026-02-12","required_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.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-01-22"},{"source":"kev","since":"2026-01-22"}],"exploits":[{"source":"nuclei","id":"CVE-2025-34026","title":"Versa Concerto Actuator Endpoint - Authentication Bypass","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34026.yaml"}],"products":[{"vendor":"versa","product":"concerto"},{"vendor":"versa-networks","product":"concerto"}],"references":[{"url":"https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce","tags":["exploit","mitigation","Exploit","Mitigation","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026","tags":["government-resource","US Government Resource"]},{"url":"https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-34026"},{"url":"https://github.com/advisories/GHSA-h2mm-jj4p-hm2p"}],"sources":{"cve":[{"id":"CVE-2025-34026","title":"Versa Concerto Actuator Authentication Bypass Information Leak","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":"published","published":"2025-05-21T22:04:58.832Z","modified":"2026-01-23T14:34:06.013Z","cvss":[{"version":"4.0","score":9.2,"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","level":"critical","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:32:54.534202Z"}],"euvd":[{"id":"EUVD-2025-16087","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":"published","published":"2025-05-21T22:04:58Z","modified":"2026-01-23T14:34:06Z","cvss":[{"version":"4.0","score":9.2,"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","level":"critical"}],"exploited_since":"2026-01-22","updated_at":"2026-11-02T19:48:48.084617Z"}],"ghsa":[{"id":"GHSA-h2mm-jj4p-hm2p","title":"The Versa Concerto SD-WAN orchestration platform is vulnerable to an authentication bypass in the...","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":"published","published":"2025-05-22T00:34:03Z","modified":"2026-01-23T21:30:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":9.2,"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","level":"critical"}],"cwes":["CWE-287","CWE-288"],"updated_at":"2026-11-02T15:05:53.055975Z"}],"kev":[{"id":"CVE-2025-34026","title":"Versa Concerto Improper Authentication Vulnerability","description":"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.","cwes":["CWE-288"],"kev":{"date_added":"2026-01-22","due_date":"2026-02-12","required_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.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2025-34026","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":"published","published":"2025-05-21T22:15:50.51Z","modified":"2026-06-17T09:13:19.833Z","cvss":[{"version":"4.0","score":9.2,"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","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:11:09.562272Z"}]}}