CVE-2020-3153

A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.

• CWE-427
• CWE-427

• http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Apr/43Exploit, Mailing List, Third Party Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsjVendor Advisory
• http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Apr/43Exploit, Mailing List, Third Party Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsjVendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153US Government Resource

Published

Feb 19, 2020

Last Modified

Aug 12, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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