{"cve":"CVE-2026-20079","nvd":{"published":"2026-03-04T18:16:24.230","modified":"2026-09-16T17:17:16.340","status":"Analyzed","description":"A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. \r\n\r\nThis vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device. ","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":["CWE-288"],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2","http://seclists.org/fulldisclosure/2026/Aug/80","https://blog.talosintelligence.com/fmc-ongoing-exploitation/","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20079"],"products":["cisco:secure_firewall_management_center"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-20079","score":0.88658,"percentile":0.99774,"date":"2026-11-01"},"kev":{"cve":"CVE-2026-20079","date_added":"2026-09-09","due_date":"2026-09-12","vendor":"Cisco","product":"Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}