CVE intelligence and bounded remediation

CVE-2024-20388 — Cisco Firepower Management Center security vulnerability

Medium CVSS 5.3

A vulnerability in the password change feature of Cisco Firepower Management Center (FMC) software could allow an unauthenticated, remote attacker to determine valid user names on an affected device. This vulnerability is due to improper authentication of password update responses. An attacker could exploit this vulnerability by forcing a password reset on an affected device. A successful exploit could allow the attacker to determine valid user names in the unauthenticated response to a forced password reset.

Severity
Medium
CVSS
5.3 (3.1)
Published
2024-10-23
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-202

Affected products

  • cisco / firepower_management_center / 6.4.0.17
  • cisco / firepower_management_center / 6.4.0.18
  • cisco / firepower_management_center / 6.6.7.2
  • cisco / firepower_management_center / 7.0.6.1
  • cisco / firepower_management_center / 7.0.6.2
  • cisco / firepower_management_center / 7.2.5.1

Showing 6 representative product identities from 104 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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