Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability

Cisco Secure Firewall Management Center (FMC)

Cisco Secure Firewall Management Center (FMC) formerly known as Firepower Management Center contains a use of hard-coded password vulnerability that could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. Added to CISA KEV on 2026-07-29 (federal deadline 2026-08-01).

First seen: 29 Jul 2026
Last update: 29 Jul 2026, 12:00 UTC
Identifiers: CVE-2026-20316
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability
Severity: critical, exploited in the wild. Patch status: patched.
Affected: Cisco Secure Firewall Management Center (FMC)
Ids: CVE-2026-20316

Cisco Secure Firewall Management Center (FMC) formerly known as Firepower Management Center contains a use of hard-coded password vulnerability that could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. Added to CISA KEV on 2026-07-29 (federal deadline 2026-08-01).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-20316") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-20316 https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-static-cred-BET3Cjh
https://pwned.coffee/i/cisco-secure-firewall-management-center-use-of-hard-code-cve-2026-20316

Sources

Totalone very hot coffee