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TI-2025-14506 Aliases CVE-2025-20206GHSA-xq6h-hm2m-hw55

Cisco Secure Client for Windows with VPN Posture (HostScan) Module DLL Hijacking Vulnerability

Priority LOW 35CWE-347Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
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 · NVD. Fix status from CNA. Impact type from CWE-347.

Summary

A vulnerability in the interprocess communication (IPC) channel of Cisco Secure Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the Secure Firewall Posture Engine, formerly HostScan, is installed on Cisco Secure Client. This vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to a specific Cisco Secure Client process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid user credentials on the Windows system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00176 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Secure Client4.9.00086; 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; 5.0.00238; 4.10.05111; 5.0.00529; 5.0.00556; 4.10.06079; 5.0.01242; 4.10.06090; 5.0.02075; 4.10.07061; 5.0.03072; 4.10.07062; 5.0.03076; 5.0.04032; 4.10.07073; 5.0.05040; 5.1.0.136; 5.1.1.42; 4.10.08025; 5.1.2.42; 4.10.08029; 5.1.3.62; 5.1.4.74; 5.1.5.65; 5.1.6.103; 5.1.7.80—No fix listedCNA
  • 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; 5.0.00238; 4.10.05111; 5.0.00529; 5.0.00556; 4.10.06079; 5.0.01242; 4.10.06090; 5.0.02075; 4.10.07061; 5.0.03072; 4.10.07062; 5.0.03076; 5.0.04032; 4.10.07073; 5.0.05040; 5.1.0.136; 5.1.1.42; 4.10.08025; 5.1.2.42; 4.10.08029; 5.1.3.62; 5.1.4.74; 5.1.5.65; 5.1.6.103; 5.1.7.80 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:secure_client:*:*:*:*:*:*:*:*before 5.1.8.105VulnerableCisco
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:cisco:secure_client:*:*:*:*:*:*:*:* Versions before 5.1.8.105 Vulnerable ·Cisco
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-20206
  2. 2026-10-03 Alias added: GHSA-xq6h-hm2m-hw55

References

Advisory 1

  • TI-2024-13271 A vulnerability in the SAML authentication process of Cisco Secure Client could allow an… CVSS 3.1HIGH 8.2
  • TI-2023-06884 Incorrect default permissions in Cisco Secure Client CVSS 3.1HIGH 7.8
  • 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-2024-13324 Missing authentication in Cisco Secure Client CVSS 3.1MEDIUM 6.8
  • TI-2024-13398 Integer underflow in Cisco Secure Client CVSS 3.1MEDIUM 6.5
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences