Missing authentication in Cisco Secure Client
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Secure Client | 4.9.00086; 4.9.01095; 4.9.02028; 4.9.03047; 4.9.03049; 4.9.04043; 4.9.04053; 4.9.05042; 4.9.06037; 4.10.00093; 4.10.01075; 4.10.02086; 4.10.03104; 4.10.04065; 4.10.04071; 4.10.05085; 4.10.05095; 4.10.05111; 4.10.06079; 4.10.06090; 4.10.07061; 4.10.07062; 4.10.07073; 4.10.08025; 4.10.08029; 5.0.00238; 5.0.00529; 5.0.00556; 5.0.01242; 5.0.02075; 5.0.03072; 5.0.03076; 5.0.04032; 5.0.05040; 5.1.0.136; 5.1.1.42; 5.1.2.42 | — | No fix listed | CNA |
- Cisco Secure Client VendorCisco Affected 4.9.00086; 4.9.01095; 4.9.02028; 4.9.03047; 4.9.03049; 4.9.04043; 4.9.04053; 4.9.05042; 4.9.06037; 4.10.00093; 4.10.01075; 4.10.02086; 4.10.03104; 4.10.04065; 4.10.04071; 4.10.05085; 4.10.05095; 4.10.05111; 4.10.06079; 4.10.06090; 4.10.07061; 4.10.07062; 4.10.07073; 4.10.08025; 4.10.08029; 5.0.00238; 5.0.00529; 5.0.00556; 5.0.01242; 5.0.02075; 5.0.03072; 5.0.03076; 5.0.04032; 5.0.05040; 5.1.0.136; 5.1.1.42; 5.1.2.42 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-20391
- 2026-10-03 Alias added: GHSA-gmvc-mphj-2pr4
References
Advisory 1
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- TI-2024-03415 DHCP routing options can manipulate interface-based VPN traffic CVSS 3.1HIGH 7.6
- TI-2024-13272 Uncontrolled search path in Cisco Secure Client CVSS 3.1HIGH 7.3
- TI-2025-14506 Cisco Secure Client for Windows with VPN Posture (HostScan) Module DLL Hijacking Vulnerability CVSS 3.1HIGH 7.8
- TI-2024-13398 Integer underflow in Cisco Secure Client CVSS 3.1MEDIUM 6.5
Sources
- CVE-2024-20391 · CVE Program
- CVE-2024-20391 · NVD
- FIRST EPSS
- GHSA-gmvc-mphj-2pr4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences