How severe is CVE-2024-20391?

CVE-2024-20391 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-20391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20391?

CVE-2024-20391 affects Cisco Secure Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-20391?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-20391 have an EU (EUVD) identifier?

Yes. CVE-2024-20391 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18106.

When was CVE-2024-20391 published?

CVE-2024-20391 was published on 2024-05-15 and last updated on 2026-06-17.

CVE-2024-20391

CVE-2024-20391 is a medium-severity vulnerability in Cisco Secure Client with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18106
Weakness: CWE-306
Affected product: Cisco Secure Client
Published: 2024-05-15
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-20391?: 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.
How severe is CVE-2024-20391?: CVE-2024-20391 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-20391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20391?: CVE-2024-20391 affects Cisco Secure Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-20391?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-20391 have an EU (EUVD) identifier?: Yes. CVE-2024-20391 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18106.
When was CVE-2024-20391 published?: CVE-2024-20391 was published on 2024-05-15 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-nam-priv-esc-szu2vYpZ

Affected products (1)

cpe:2.3:a:cisco:secure_client:*:*:*:*:*:*:*:*

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