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TI-2021-01223 Aliases CVE-2021-1496GHSA-gfc5-fm98-fg6j

Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking Vulnerabilities

Priority LOW 37CWE-378Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
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-427.

Summary

Multiple vulnerabilities in the install, uninstall, and upgrade processes of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to hijack DLL or executable files that are used by the application. A successful exploit could allow the attacker to execute arbitrary code on an affected device with SYSTEM privileges. To exploit these vulnerabilities, the attacker must have valid credentials on the Windows system. For more information about these vulnerabilities, see the Details section of this advisory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00527 44th 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 AnyConnect Secure Mobility Clientall versions—No fix listedCNA
  • Cisco AnyConnect Secure Mobility Client VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:windows:*:*before 4.9.03022VulnerableCisco
  • cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:windows:*:* Versions before 4.9.03022 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Cisco AnyConnect Secure Mobility Client — 20210505 Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking Vulnerabilities

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2021-01157 Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking VulnerabilitiesPriority LOW 36
    • TI-2021-01156 Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking VulnerabilitiesPriority LOW 36
    • TI-2021-01155 Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking VulnerabilitiesPriority LOW 36
    Show all 6 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1496
  2. 2026-10-03 Alias added: GHSA-gfc5-fm98-fg6j

References

Advisory 1

  • TI-2020-02982 Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2020-02715 Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability KEVCVSS 3.1MEDIUM 6.5
  • TI-2011-01789 The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect… CVSS 2.0HIGH 7.6
  • TI-2011-01790 The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect… CVSS 2.0HIGH 9.3
  • TI-2012-02179 The VPN downloader implementation in the WebLaunch feature in Cisco AnyConnect Secure… CVSS 2.0HIGH 9.3
  • TI-2023-06884 Incorrect default permissions in Cisco Secure Client CVSS 3.1HIGH 7.8
See all 68 →

Sources

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