← Vulnerability feed

Vulnerability record · CVE-2021-40124 · published 4 November 2021

CVE-2021-40124: Cisco anyconnect secure mobility client improper privilege management vulnerability

Cisco · Anyconnect Secure Mobility Client

A vulnerability in the Network Access Manager (NAM) module of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to escalate privileges on an affected device. This vulnerability is due to incorrect privilege assignment to scripts executed before user logon. An attacker could exploit this vulnerability by configuring a script to be executed before logon. A successful exploit could allow the attacker to execute arbitrary code with SYSTEM privileges.

7.8 CVSS 3.1 High EPSS 0.24% · top 86.2% CWE-266 · CWE-266CWE-269 · Improper privilege management
7.8CVSS 3.1 base score, v2 7.2
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the Network Access Manager (NAM) module of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to escalate privileges on an affected device. This vulnerability is due to incorrect privilege assignment to scripts executed before user logon. An attacker could exploit this vulnerability by configuring a script to be executed before logon. A successful exploit could allow the attacker to execute arbitrary code with SYSTEM privileges.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-nam-priv-yCsRNUGT Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-nam-priv-yCsRNUGT Vendor Advisory

Track CVE-2021-40124 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2020-3433Cisco AnyConnect Windows client DLL hijacking via IPC channelCisco AnyConnect Secure Mobility Client for Windows fails to properly validate resources loaded at run time, allowing a DLL hijacking attack through …KEVEPSS 10%analysed6.5CVE-2020-3153Cisco AnyConnect Windows Installer Path Handling Privilege EscalationThe Cisco AnyConnect Secure Mobility Client for Windows installer mishandles directory paths, letting an authenticated local user copy attacker-suppl…KEVEPSS 28%analysed9.3CVE-2012-3088Cisco anyconnect secure mobility client vulnerabilityCisco AnyConnect Secure Mobility Client 3.1.x before 3.1.00495, and 3.2.x, does not check whether an HTTP request originally contains ScanSafe header…EPSS 1.8%9.3CVE-2012-2493Cisco anyconnect secure mobility client improper input validation vulnerabilityThe VPN downloader implementation in the WebLaunch feature in Cisco AnyConnect Secure Mobility Client 2.x before 2.5 MR6 on Windows, and 2.x before 2…EPSS 3.9%9.3CVE-2011-2040Cisco anyconnect secure mobility client improper input validation vulnerabilityThe helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.5.3041, and 3.0.x before 3.0.629, on Linu…EPSS 11%7.8CVE-2023-20178Cisco anyconnect secure mobility client incorrect default permissions vulnerabilityA vulnerability in the client update process of Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Win…EPSS 5.4%7.8CVE-2021-1426Cisco anyconnect secure mobility client uncontrolled search path element vulnerabilityMultiple vulnerabilities in the install, uninstall, and upgrade processes of Cisco AnyConnect Secure Mobility Client for Windows could allow an authe…EPSS 0.25%7.8CVE-2021-1427Cisco anyconnect secure mobility client uncontrolled search path element vulnerabilityMultiple vulnerabilities in the install, uninstall, and upgrade processes of Cisco AnyConnect Secure Mobility Client for Windows could allow an authe…EPSS 0.25%

Source: NIST National Vulnerability Database (record CVE-2021-40124), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.