---
title: "CVE-2026-20079: Cisco Secure Firewall Management Center… | CubePath"
description: "A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass…"
language: en
source: https://cubepath.com/security/cve/CVE-2026-20079
---

# CVE-2026-20079: Cisco Secure Firewall Management Center… | CubePath

## 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.

Official description from the CVE record, published by cisco. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-20079)

## Key data

### CVSS 3.1 Critical 10.0

Score published by cisco in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

| Metric                 | Value   | What it means                                                                       |
| ---------------------- | ------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low     | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None    | No account or privileges are needed.                                                |
| User interaction       | None    | No action from any user is needed.                                                  |
| Scope                  | Changed | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | High    | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | High    | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | High    | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.88658 (88.7% probability)

Percentile

99.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

Added to the catalog

Sep 9, 2026

Federal due date

Sep 12, 2026

### CISA assessment as of Sep 10, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

yes

Technical impact

total

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-288](https://cwe.mitre.org/data/definitions/288.html) Authentication Bypass Using an Alternate Path or Channel

## Affected products

Products listed in the CVE record, as the CNA published them.

- Cisco Secure Firewall Management Center (FMC)

  - affected: 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
  - and 47 more

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [cisco-sa-onprem-fmc-authbypass-5JPp45V2](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2)  (sec.cloudapps.cisco.com)
- [seclists.org/fulldisclosure/2026/Aug/80](http://seclists.org/fulldisclosure/2026/Aug/80)

## Timeline

1. ID reserved Oct 8, 2025
2. Record published Mar 4, 2026
3. Added to CISA KEV Sep 9, 2026
4. Record last updated Sep 16, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:08 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)