Vulnerability Intelligence Report
Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulnerability
CVE-2026-20079
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
EPSS Probability:75.75%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-288 ↗Authentication Bypass Using an Alternate Path or Channel
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.0 (affected), 7.0.0.1 (affected), 7.0.1 (affected), 7.1.0 (affected), 7.0.1.1 (affected), 7.1.0.1 (affected), 7.0.2 (affected), 7.2.0 (affected), 7.0.2.1 (affected), 7.0.3 (affected), 7.1.0.2 (affected), 7.2.0.1 (affected), 7.0.4 (affected), 7.2.1 (affected), 7.0.5 (affected), 7.3.0 (affected), 7.2.2 (affected), 7.3.1 (affected), 7.2.3 (affected), 7.1.0.3 (affected), 7.2.3.1 (affected), 7.2.4 (affected), 7.0.6 (affected), 7.2.4.1 (affected), 7.2.5 (affected), 7.3.1.1 (affected), 7.4.0 (affected), 7.0.6.1 (affected), 7.2.5.1 (affected), 7.4.1 (affected), 7.2.6 (affected), 7.4.1.1 (affected), 7.0.6.2 (affected), 7.2.7 (affected), 7.2.5.2 (affected), 7.3.1.2 (affected), 7.2.8 (affected), 7.6.0 (affected), 7.4.2 (affected), 7.2.8.1 (affected), 7.0.6.3 (affected), 7.4.2.1 (affected), 7.2.9 (affected), 7.0.7 (affected), 7.7.0 (affected), 7.4.2.2 (affected), 7.2.10 (affected), 7.6.1 (affected), 7.4.2.3 (affected), 7.0.8 (affected), 7.6.2 (affected), 7.7.10 (affected), 7.2.10.1 (affected), 7.0.8.1 (affected), 7.6.2.1 (affected), 7.2.10.2 (affected), 7.7.10.1 (affected), 7.4.2.4 (affected), 7.4.3 (affected), 7.6.3 (affected), 7.7.11 (affected), 7.6.4 (affected), 10.0.0 (affected), 7.4.4 (affected), 7.4.5 (affected), 7.0.9 (affected), 7.2.11 (affected), 7.7.12 (affected), 7.6.5 (affected), 7.4.6 (affected), 10.0.1 (affected), 7.4.7 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
75.752%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2025-10-08T11:59:15 |
| Published | 2026-03-04T17:17:35 |
| Last Updated | 2026-09-16T20:08:37 |
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