Vulnerability details
CVE-2026-20079
Actively exploited
Cisco Secure Firewall Management Center
Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulnerability
CVSS 3.1
10.0Critical
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (cisco) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Management Center (FMC) | 10.0.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 10.0.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.0.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.1.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.2.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.7 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.8 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.8.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.9 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.0.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.10 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.10.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.10.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.11 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.3.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.4.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.5.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.5.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.7 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.8 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.8.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.9 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.1.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.1.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.1.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.7 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.2.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.0 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.10 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.10.1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.11 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.12 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2
- https://blog.talosintelligence.com/fmc-ongoing-exploitation/ third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20079 government-resource
- http://seclists.org/fulldisclosure/2026/Aug/80
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Details
- Published
- 2026-03-04
- Last updated
- 2026-09-16
- State
- Published
- Assigner (CNA)
- cisco
- Kolun priority
- 90 · Critical
CISA KEV catalog
- Date added
- 2026-09-09
- Due date
- 2026-09-12
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
88.65%
Probability of exploitation in 30 days
99.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-288Authentication Bypass Using an Alternate Path or Channel