Cisco Secure Firewall Management Center Hard-Coded Password Lets Attackers Bypass Authentication; CISA's August 1st KEV Deadline for Covered Entities Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-20316

Key Details

CVE	CVE-2026-20316
Vulnerability Name	Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability
Affected products	Cisco Secure Firewall Management Center (FMC)
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-259 (Use of Hard-coded Password)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-07-29.
Exploitation prediction (EPSS)	35.10% probability of exploitation in the next 30 days (98% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-08-01 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Cisco	Secure Firewall Management Center (FMC)

Vendor

Product

Affected Versions

Patch Status

Cisco

Secure Firewall Management Center (FMC)

Subsystems	Industrial Network - Routers/Firewalls
Sectors	Multiple

What to Know

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.

What to Do

Monitor Cisco's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-20316
CVE	https://www.cve.org/CVERecord?id=CVE-2026-20316

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-20316

CVE

https://www.cve.org/CVERecord?id=CVE-2026-20316

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-07-29
Required Action Due Date	2026-08-01
Required Action	Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-07-29

Required Action Due Date

2026-08-01

Required Action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.