BaseFortify

Publication date: 2026-09-16

Last updated on: 2026-09-18

Assigner: Cisco Systems, Inc.

Description

A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space. This vulnerability exists because a critical API lacks authentication. An attacker could exploit this vulnerability by repeatedly invoking the API. A successful exploit could allow the attacker to download sensitive files that should be restricted and consume disk space so the device could become unresponsive, causing a DoS condition.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-16

Last Modified

2026-09-18

Generated

2026-09-20

EPSS Evaluated

N/A

NVD

CVE-2026-20343

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

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