CVE intelligence and bounded remediation

CVE-2022-20826 — Cisco Adaptive Security Appliance Software security vulnerability

Medium CVSS 6.8

A vulnerability in the secure boot implementation of Cisco Secure Firewalls 3100 Series that are running Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated attacker with physical access to the device to bypass the secure boot functionality. This vulnerability is due to a logic error in the boot process. An attacker could exploit this vulnerability by injecting malicious code into a specific memory location during the boot process of an affected device. A successful exploit could allow the attacker to execute persistent code at boot time and break the chain of trust.

Severity
Medium
CVSS
6.8 (3.1)
Published
2022-11-15
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-501

Affected products

  • cisco / adaptive_security_appliance_software / 9.17.1
  • cisco / adaptive_security_appliance_software / 9.17.1.9
  • cisco / adaptive_security_appliance_software / 9.17.1.10
  • cisco / adaptive_security_appliance_software / 9.17.1.13
  • cisco / adaptive_security_appliance_software / 9.18.1
  • cisco / adaptive_security_appliance_software / 9.18.1.3

Showing 6 representative product identities from 9 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

General vulnerability remediation

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

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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