Is CVE-2026-20079 in the CISA KEV catalog?

No. CVE-2026-20079 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-20079?

CVE-2026-20079 has a CVSS v3 base score of 10.0 (CRITICAL).

What is the EPSS score for CVE-2026-20079?

CVE-2026-20079 has an EPSS score of 38.70% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-20079?

No published fix for CVE-2026-20079 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-20079

CRITICALEPSS 98th pctl

10.0

CVSS v3

NVD

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.

CWE-288

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

38.70%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Other references1

sec.cloudapps.cisco.com

Related Vulnerabilities

Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2024-1709	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2024-27198	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2025-4427	Medium	5.3	100%	KEV	Fix
CVE-2024-55591	Critical	9.8	98%	KEV + Ransom	Fix
CVE-2023-46747	Critical	9.8	97%	KEV + Ransom	-

Embed a live status badge for CVE-2026-20079

Markdown

[![CVE-2026-20079](https://tridentstack.com/cve/badge/CVE-2026-20079.svg)](https://tridentstack.com/cve/CVE-2026-20079)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-20079"><img src="https://tridentstack.com/cve/badge/CVE-2026-20079.svg" alt="CVE-2026-20079"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-05.