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High [CVE-2026-20167 +2] Cisco IoT Field Network Director Vulnerabilities

This high-severity Cisco advisory covers CVE-2026-20167 and CVE-2026-20168 and 1 more CVE affecting IoT Field Network Director (IoT-FND).

cisco-sa-iot-fnd-dos-n8N26Q4u Published May 6, 2026Updated by vendor May 6, 2026
Affected products & platforms
CiscoRouters
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Summary

Multiple vulnerabilities in the web-based management interface of Cisco IoT Field Network Director Software could allow an authenticated, remote attacker to access files, execute commands, and cause denial of service (DoS) conditions on managed routers.

For more information about these vulnerabilities, see the Details section of this advisory.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Affected product named by the advisory: IoT Field Network Director (IoT-FND).

Affected versions
  • Scope: These vulnerabilities affect Cisco IoT Field Network Director, regardless of device configuration.
  • 4 and earlier1 — Migrate to a fixed release
  • Release 5 (first fixed: 5.0.0-117)

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 5.0.0-117

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
  • Release 4 and earlier1: migrate to a fixed release.
  • Release 5: upgrade to 5.0.0-117.
Workaround status
  • There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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