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Vulnerability record · CVE-2024-20391 · published 15 May 2024

CVE-2024-20391: Cisco secure client missing authentication for critical function vulnerability

Cisco · Secure Client

A vulnerability in the Network Access Manager (NAM) module of Cisco Secure Client could allow an unauthenticated attacker with physical access to an affected device to elevate privileges to SYSTEM. This vulnerability is due to a lack of authentication on a specific function. A successful exploit could allow the attacker to execute arbitrary code with SYSTEM privileges on an affected device.

6.8 CVSS 3.1 Medium EPSS 0.35% · top 74.3% CWE-306 · Missing authentication for critical function
6.8CVSS 3.1 base score
0.35%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 Secure Client could allow an unauthenticated attacker with physical access to an affected device to elevate privileges to SYSTEM. This vulnerability is due to a lack of authentication on a specific function. A successful exploit could allow the attacker to execute arbitrary code with SYSTEM privileges on an affected device.

CVSS:3.1/AV:P/AC:L/PR:N/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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-nam-priv-esc-szu2vYpZ Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-nam-priv-esc-szu2vYpZ Vendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2024-20391), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.