{"id":"CVE-2020-3580","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 < 6.4.0.12","secure_firewall_threat_defense >= 6.5.0, < 6.6.4","secure_firewall_threat_defense >= 6.7.0, < 6.7.0.2","adaptive_security_appliance_software < 9.8.4.34","adaptive_security_appliance_software >= 9.9, < 9.9.2.85","adaptive_security_appliance_software >= 9.10, < 9.12.4.13","adaptive_security_appliance_software >= 9.13, < 9.13.1.21","adaptive_security_appliance_software >= 9.14, < 9.14.2.8","adaptive_security_appliance_software >= 9.15, < 9.15.1.15"],"patched":["secure_firewall_threat_defense 6.7.0.2","adaptive_security_appliance_software 9.15.1.15"],"published":"2020-10-21","updated":"2026-08-11","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-3580","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"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3580","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild","exploit-available"],"epss":0.85575,"epssPercentile":0.99719,"kev":true,"kevDateAdded":"2021-11-03","kevDueDate":"2022-05-03","kevRansomware":true,"exploited":true,"ingestedAt":"2026-08-18T12:28:06.544Z","exploits":{"github":4,"githubRepos":["https://github.com/Hudi233/CVE-2020-3580","https://github.com/adarshvs/CVE-2020-3580","https://github.com/cruxN3T/CVE-2020-3580"],"nuclei":["CVE-2020-3580"],"checkedAt":"2026-09-21T15:23:59.199Z"},"exploitAvailable":true,"slug":"CVE-2020-3580","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 < 6.4.0.12`\n- `secure_firewall_threat_defense >= 6.5.0, < 6.6.4`\n- `secure_firewall_threat_defense >= 6.7.0, < 6.7.0.2`\n- `adaptive_security_appliance_software < 9.8.4.34`\n- `adaptive_security_appliance_software >= 9.9, < 9.9.2.85`\n- `adaptive_security_appliance_software >= 9.10, < 9.12.4.13`\n- `adaptive_security_appliance_software >= 9.13, < 9.13.1.21`\n- `adaptive_security_appliance_software >= 9.14, < 9.14.2.8`\n- `adaptive_security_appliance_software >= 9.15, < 9.15.1.15`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `secure_firewall_threat_defense 6.7.0.2`\n- `adaptive_security_appliance_software 9.15.1.15`","depth":"midnight","depthScore":81,"depthScoreParts":{"impact":33.6,"likelihood":17.1,"exploitation":25,"ransomware":5},"changes":[{"seq":4482,"id":"CVE-2020-3580","ts":1788887183386,"field":"exploit_available","old":"false","new":"true"},{"seq":3365,"id":"CVE-2020-3580","ts":1788886302256,"field":"exploit_available","old":"true","new":"false"},{"seq":2220,"id":"CVE-2020-3580","ts":1788882971945,"field":"exploit_available","old":"false","new":"true"},{"seq":1249,"id":"CVE-2020-3580","ts":1788882383506,"field":"exploit_available","old":"true","new":"false"},{"seq":363,"id":"CVE-2020-3580","ts":1788881818880,"field":"exploit_available","old":"false","new":"true"}]}