{"id":"CVE-2020-3582","title":"Multiple vulnerabilities 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 cross-site scripting …","summary":"Multiple vulnerabilities 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 cross-site scripting …","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79","CWE-79"],"vendor":"cisco","product":"secure_firewall_threat_defense","affected":["secure_firewall_threat_defense >= 6.4.0, < 6.4.0.10","firepower_threat_defense < 6.3.0.6","firepower_threat_defense >= 6.5.0, < 6.5.0.5","firepower_threat_defense >= 6.6.0, < 6.6.1","adaptive_security_appliance_software < 9.8.4.26","adaptive_security_appliance_software >= 9.9, < 9.9.2.80","adaptive_security_appliance_software >= 9.10, < 9.10.1.44","adaptive_security_appliance_software >= 9.12, < 9.12.4.4","adaptive_security_appliance_software >= 9.13, < 9.13.1.13","adaptive_security_appliance_software >= 9.14, < 9.14.1.30"],"patched":["secure_firewall_threat_defense 6.4.0.10","firepower_threat_defense 6.6.1","adaptive_security_appliance_software 9.14.1.30"],"published":"2020-10-21","updated":"2026-08-11","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-3582","references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-multiple-FCB3vPZe","label":"psirt@cisco.com"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-multiple-FCB3vPZe","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.01159,"epssPercentile":0.65243,"ingestedAt":"2026-08-18T12:28:06.635Z","slug":"CVE-2020-3582","body":"## Overview\n\nMultiple vulnerabilities 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 cross-site scripting (XSS) attacks against a user of the web services interface of an affected device. The vulnerabilities are due to insufficient validation of user-supplied input by the web services interface of an affected device. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information. Note: These vulnerabilities affect only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.\n\n## Affected\n\n- `secure_firewall_threat_defense >= 6.4.0, < 6.4.0.10`\n- `firepower_threat_defense < 6.3.0.6`\n- `firepower_threat_defense >= 6.5.0, < 6.5.0.5`\n- `firepower_threat_defense >= 6.6.0, < 6.6.1`\n- `adaptive_security_appliance_software < 9.8.4.26`\n- `adaptive_security_appliance_software >= 9.9, < 9.9.2.80`\n- `adaptive_security_appliance_software >= 9.10, < 9.10.1.44`\n- `adaptive_security_appliance_software >= 9.12, < 9.12.4.4`\n- `adaptive_security_appliance_software >= 9.13, < 9.13.1.13`\n- `adaptive_security_appliance_software >= 9.14, < 9.14.1.30`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `secure_firewall_threat_defense 6.4.0.10`\n- `firepower_threat_defense 6.6.1`\n- `adaptive_security_appliance_software 9.14.1.30`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}