{"cve":{"cve_id":"CVE-2026-20230","is_kev":true,"kev_date_added":"2026-06-25","kev_vendor_project":"Cisco","kev_product":"Unified Communications Manager","kev_vulnerability_name":"Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability","kev_short_description":"Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root.","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":"2026-06-28","kev_known_ransomware":false,"kev_notes":"https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-cucm-ssrf-cXPnHcW.html ; 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-2026-20230","kev_cwes":["CWE-918"],"epss_score":0.882,"epss_percentile":0.99754,"epss_as_of":"2026-08-26","description":"A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device.\r\n\r\nThis vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate to root.\r\nNote: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.\r\nNote: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.","published_at":"2026-06-03T16:09:45.961000Z","last_modified_at":"2026-07-22T19:10:00.120000Z","cvss_v3_score":8.6,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-918"],"nvd_references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"],"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":"2026-06-24T00:09:39.878444Z","updated_at":"2026-07-22T21:45:23.985958Z"},"effective_severity":"HIGH","badges":["kev","news","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack 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News","url":"https://thehackernews.com/2026/06/cisco-unified-cm-flaw-exploited-after.html","title":"Cisco Unified CM Flaw Exploited After PoC Reveals File-Write Path to Root","summary":"Threat actors have begun to exploit a recently disclosed critical security flaw impacting Cisco Unified Communications Manager (Unified CM) and Unified Communications Manager Session Management Edition (Unified CM SME).\n\nThe vulnerability, tracked as CVE-2026-20230 (CVSS score: 8.6), is a case of improper input validation for specific HTTP requests that could allow an unauthenticated, remote","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivauBSNOsDqBHvUFSnF1NdlWJ8BAt2JVgIo_ZUQhBkVppSz0PvkEmrc9RP1hMf2-oFFRgr5PNm7pxLmPngAJHcxV6-F3e43bEqmdEg38013JmlUKDlGVOLQTj6bYbyk_R7WXBqbW3o2yPHdosqz7nncLivqDqXGAuiTFcHkPqiVPBJuDHlsvYWtEreVmk_/s1600/cc.jpg","author":"info@thehackernews.com (The Hacker 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