--- id: CVE-2020-3452 title: >- 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 an… summary: >- 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 an… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N' cwe: - CWE-20 - CWE-22 vendor: cisco product: secure_firewall_threat_defense affected: - 'adaptive_security_appliance_software >= 9.6, < 9.6.4.42' - 'adaptive_security_appliance_software >= 9.8, < 9.8.4.20' - 'adaptive_security_appliance_software >= 9.9, < 9.9.2.74' - 'adaptive_security_appliance_software >= 9.10, < 9.10.1.42' - 'adaptive_security_appliance_software >= 9.12, < 9.12.3.12' - 'adaptive_security_appliance_software >= 9.13, < 9.13.1.10' - 'adaptive_security_appliance_software >= 9.14, < 9.14.1.10' - 'secure_firewall_threat_defense >= 6.2.3, < 6.2.3.16' - 'secure_firewall_threat_defense >= 6.3.0, < 6.3.0.6' - 'secure_firewall_threat_defense >= 6.4.0, < 6.4.0.10' - 'secure_firewall_threat_defense >= 6.5.0, < 6.5.0.5' - 'secure_firewall_threat_defense >= 6.6.0, < 6.6.0.1' patched: - adaptive_security_appliance_software 9.14.1.10 - secure_firewall_threat_defense 6.6.0.1 published: '2020-07-22' updated: '2026-08-11' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-3452' references: - url: >- http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html label: psirt@cisco.com - url: >- http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html label: psirt@cisco.com - url: >- http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html label: psirt@cisco.com - url: >- http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html label: psirt@cisco.com - url: >- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86 label: psirt@cisco.com - url: >- http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86 label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3452 label: 134c704f-9b21-4f2e-91b3-4a467353bcc0 tags: - nvd - kev - in-the-wild - exploit-available epss: 0.99992 epssPercentile: 0.99987 kev: true kevDateAdded: '2021-11-03' kevDueDate: '2022-05-03' kevRansomware: false exploited: true exploitAvailable: true ingestedAt: '2026-08-11T19:48:28.279Z' exploits: exploitdb: true github: 23 githubRepos: - 'https://github.com/XDev05/CVE-2020-3452-PoC' - 'https://github.com/Loneyers/cve-2020-3452' - 'https://github.com/PR3R00T/CVE-2020-3452-Cisco-Scanner' nuclei: - CVE-2020-3452 checkedAt: '2026-09-13T03:11:07.434Z' --- ## Overview 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. ## Affected - `adaptive_security_appliance_software >= 9.6, < 9.6.4.42` - `adaptive_security_appliance_software >= 9.8, < 9.8.4.20` - `adaptive_security_appliance_software >= 9.9, < 9.9.2.74` - `adaptive_security_appliance_software >= 9.10, < 9.10.1.42` - `adaptive_security_appliance_software >= 9.12, < 9.12.3.12` - `adaptive_security_appliance_software >= 9.13, < 9.13.1.10` - `adaptive_security_appliance_software >= 9.14, < 9.14.1.10` - `secure_firewall_threat_defense >= 6.2.3, < 6.2.3.16` - `secure_firewall_threat_defense >= 6.3.0, < 6.3.0.6` - `secure_firewall_threat_defense >= 6.4.0, < 6.4.0.10` - `secure_firewall_threat_defense >= 6.5.0, < 6.5.0.5` - `secure_firewall_threat_defense >= 6.6.0, < 6.6.0.1` ## Remediation Upgrade past the affected range: - `adaptive_security_appliance_software 9.14.1.10` - `secure_firewall_threat_defense 6.6.0.1`