What’s Vulnerable › Vulnerabilities

CVE-2020-26078: Cisco IoT Field Network Director File Overwrite Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-18 · updated 2026-06-17
• Weakness: CWE-73

Description

A vulnerability in the file system of Cisco IoT Field Network Director (FND) could allow an authenticated, remote attacker to overwrite files on an affected system. The vulnerability is due to insufficient file system protections. An attacker could exploit this vulnerability by crafting API requests and sending them to an affected system. A successful exploit could allow the attacker to overwrite files on an affected system.

Affected products

• Cisco IoT Field Network Director (IoT-FND): before 4.6.1 — fixed in 4.6.1

How to fix

Upgrade to a fixed version: Cisco IoT Field Network Director (IoT-FND) 4.6.1. Check the vendor advisory for mitigations.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-FND-OVW-SHzOE3Pd
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-FND-OVW-SHzOE3Pd

Get alerted when CVE-2020-26078 or the next vulnerability affects your stack