{"schema":"threatline.record/2","record":{"id":"CVE-2025-34026","aliases":[],"summary":"Versa Concerto Improper Authentication Vulnerability","details":"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.","categories":["Unclassified"],"product":"Concerto","vendor":"Versa","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-34026","source_modified_at":"2026-01-23T14:34:06.013Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Concerto","vendor":"Versa","versions":[{"lessThanOrEqual":"12.2.0","status":"affected","version":"12.1.2","versionType":"semver"}],"defaultStatus":"unknown"}],"fixed_versions":[],"cvss":9.2,"severity":"Critical","kev":{"listed":true,"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.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.8178,"percentile":0.99647,"score_date":"2026-10-23"},"published_at":"2025-05-21T22:04:58.832Z","modified_at":"2026-01-23T14:34:06.013Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2025-34026","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-01-23T14:34:06.013Z"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34026.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-34026","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Nuclei","EPSS"],"references":[{"source":"CVE List","url":"https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-34026","source":"CISA KEV"},{"source":"CVE List","url":"https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce","tags":["exploit"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"partial","assessed_at":"2026-01-23T14:34:03.184960Z"},"exploits":[{"source":"Nuclei","kind":"Scanner template","name":"Versa Concerto Actuator Endpoint - Authentication Bypass","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34026.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-01-23T14:34:06.013Z","content_hash":"301052c6272550ccbcddf282cf4a913c9d2ca8d4dc1ab8e1b81ee629f32f31a0"}}