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CVE-2020-3153

6.5
MEDIUMCVSS v3.1 Base Score
25.09%
LOW RiskEPSS (96th percentile)
KEV

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.

Published: 2/19/2020
Modified: 10/28/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability

Vendor / Product:

Cisco AnyConnect Secure

Required Action:

Apply updates per vendor instructions.

Due Date: 11/14/2022(OVERDUE)
Ransomware Campaign Use
Added to KEV:

10/24/2022

Notes:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj; https://nvd.nist.gov/vuln/detail/CVE-2020-3153

Vulnerability Summary

CVSS v3 Score

6.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

CVSS v2 Score

4.9

AV:L/AC:L/Au:N/C:N/I:C/A:N

EPSS Score (Exploitation Probability)

25.09%LOW Exploitation Risk
96th percentile

This vulnerability has a 25.09% probability of being exploited in the next 30 days, ranking higher than 96% of all scored CVEs.

CWE Classification

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