CVE intelligence and bounded remediation

CVE-2022-20928 — Cisco Adaptive Security Appliance Software security vulnerability

Medium CVSS 5.8

A vulnerability in the authentication and authorization flows for VPN connections in Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to establish a connection as a different user. This vulnerability is due to a flaw in the authorization verifications during the VPN authentication flow. An attacker could exploit this vulnerability by sending a crafted packet during a VPN authentication. The attacker must have valid credentials to establish a VPN connection. A successful exploit could allow the attacker to establish a VPN connection with access privileges from a different user.

Severity
Medium
CVSS
5.8 (3.1)
Published
2022-11-15
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-863

Affected products

  • cisco / adaptive_security_appliance_software / 9.6.1
  • cisco / adaptive_security_appliance_software / 9.6.1.3
  • cisco / adaptive_security_appliance_software / 9.6.1.5
  • cisco / adaptive_security_appliance_software / 9.6.1.10
  • cisco / adaptive_security_appliance_software / 9.6.2
  • cisco / adaptive_security_appliance_software / 9.6.2.1

Showing 6 representative product identities from 305 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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