{"id":"CVE-2020-3433","aliases":["EUVD-2020-24704","GHSA-v63m-wv25-vhmp"],"status":"published","title":"Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability","description":"A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.10049,"percentile":0.95653,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-427"],"published":"2020-08-17T18:01:06Z","modified":"2026-08-12T05:17:30Z","kev":{"date_added":"2022-10-24","due_date":"2022-11-14","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"exploitation":[{"source":"euvd","since":"2022-10-24"},{"source":"kev","since":"2022-10-24"}],"exploits":[{"source":"metasploit","id":"exploit/windows/local/anyconnect_lpe","title":"Cisco AnyConnect Privilege Escalations (CVE-2020-3153 and CVE-2020-3433)","type":"exploit","platform":"Windows","date":"2020-08-05","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/local/anyconnect_lpe"},{"source":"pocgithub","id":"goichot/CVE-2020-3433","title":"goichot/CVE-2020-3433","date":"2020-09-25","url":"https://github.com/goichot/CVE-2020-3433"}],"products":[{"vendor":"cisco","product":"anyconnect secure"},{"vendor":"cisco","product":"anyconnect_secure_mobility_client"},{"vendor":"cisco","product":"cisco anyconnect secure mobility client"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3433","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3433"},{"url":"https://github.com/advisories/GHSA-v63m-wv25-vhmp"}],"sources":{"cve":[{"id":"CVE-2020-3433","title":"Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability","description":"A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.","status":"published","published":"2020-08-17T18:01:06.828Z","modified":"2026-08-12T03:55:39.452Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:35:51.923913Z"}],"euvd":[{"id":"EUVD-2020-24704","description":"A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.","status":"published","published":"2020-08-17T18:01:06Z","modified":"2026-08-12T03:55:39Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"exploited_since":"2022-10-24","updated_at":"2026-11-02T18:01:59.11112Z"}],"ghsa":[{"id":"GHSA-v63m-wv25-vhmp","title":"A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure...","description":"A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.","status":"published","published":"2022-05-24T17:26:02Z","modified":"2025-10-22T00:33:02Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T15:04:07.112106Z"}],"kev":[{"id":"CVE-2020-3433","title":"Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability","description":"Cisco AnyConnect Secure Mobility Client for Windows interprocess communication (IPC) channel allows for insufficient validation of resources that are loaded by the application at run time. An attacker with valid credentials on Windows could execute code on the affected machine with SYSTEM privileges.","cwes":["CWE-427"],"kev":{"date_added":"2022-10-24","due_date":"2022-11-14","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"updated_at":"2026-11-02T17:00:16.234141Z"}],"nvd":[{"id":"CVE-2020-3433","description":"A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.","status":"published","published":"2020-08-17T18:15:12.947Z","modified":"2026-08-12T05:17:30.81Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:06:13.05572Z"}]}}