{"cve":{"cve_id":"CVE-2026-72530","is_kev":true,"kev_date_added":"2026-08-20","kev_vendor_project":"TrueConf","kev_product":"Server","kev_vulnerability_name":"TrueConf Server Code Injection Vulnerability","kev_short_description":"TrueConf Server contains a code injection vulnerability that could allow an unauthorized remote attacker with network access via port 4307/TCP to use a specially crafted script to break out of the isolated environment and execute arbitrary code on the host system.","kev_required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","kev_due_date":"2026-09-03","kev_known_ransomware":false,"kev_notes":"https://trueconf.com/blog/news/security-fixes-updates-and-advisories ; https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-breakout-from-isolated-environment/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-72530","kev_cwes":["CWE-94"],"epss_score":0.01827,"epss_percentile":0.77223,"epss_as_of":"2026-08-26","description":"A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could use a specially crafted script to break out of the isolated environment and execute arbitrary code on the host system.","published_at":"2026-08-19T16:56:53.099000Z","last_modified_at":"2026-08-21T04:18:15.903000Z","cvss_v3_score":9.0,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":9.5,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","cvss_v4_severity":"CRITICAL","ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-94"],"nvd_references":["https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-breakout-from-isolated-environment/"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-08-19T18:43:27.514802Z","updated_at":"2026-08-22T17:48:17.394943Z"},"effective_severity":"CRITICAL","badges":["kev"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User 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Server","version_start":"5.3","version_start_inclusive":true,"version_end":"5.3.9","version_end_inclusive":false,"cpe23_uri":"cve5:trueconf:trueconf-server:5.3:5.3.9"},{"vendor_slug":"trueconf","vendor_name":"TrueConf","product_slug":"trueconf-server","product_name":"TrueConf Server","version_start":"5.4","version_start_inclusive":true,"version_end":"5.4.9","version_end_inclusive":false,"cpe23_uri":"cve5:trueconf:trueconf-server:5.4:5.4.9"},{"vendor_slug":"trueconf","vendor_name":"TrueConf","product_slug":"trueconf-server","product_name":"TrueConf Server","version_start":"5.5","version_start_inclusive":true,"version_end":"5.5.5","version_end_inclusive":false,"cpe23_uri":"cve5:trueconf:trueconf-server:5.5:5.5.5"},{"vendor_slug":"trueconf","vendor_name":"TrueConf","product_slug":"trueconf-server","product_name":"TrueConf Server","version_start":null,"version_start_inclusive":null,"version_end":"5.3.9.10013","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:windows:*:*"},{"vendor_slug":"trueconf","vendor_name":"TrueConf","product_slug":"trueconf-server","product_name":"TrueConf Server","version_start":null,"version_start_inclusive":null,"version_end":"5.3.9.10015","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:linux_kernel:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-breakout-from-isolated-environment/","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-08-19T16:56:53.099000Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2026-08-20T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"ssvc_changed","at":"2026-08-20T18:43:27.515044Z","label":"SSVC decision 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