{"cve":"CVE-2020-3452","nvd":{"published":"2020-07-22T20:15:11.970","modified":"2026-08-11T19:33:44.513","status":"Analyzed","description":"A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-22","CWE-20"],"references":["http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html","http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html","http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html","http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86"],"products":["cisco:adaptive_security_appliance_software","cisco:secure_firewall_threat_defense"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2020-3452","score":0.99992,"percentile":0.99986,"date":"2026-10-31"},"kev":{"cve":"CVE-2020-3452","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"Cisco","product":"Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)","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."]}