CVE-2026-20168: Cisco IoT Field Network Director path traversal in web management interface

CVE-2026-20168 · Severity: medium · CVSS 6.5 · Published 2026-05-06

Cisco IoT Field Network Director, a platform used to manage large-scale industrial networks and smart grid infrastructure, contains a security flaw in its web management interface. An attacker with low-level user credentials could exploit this to access sensitive system files they are not authorized to see. This could lead to the exposure of configuration data or other internal information, potentially aiding further attacks on the network infrastructure.

Technologies: Cisco Iot Field Network Director. Vendors: Cisco.

Quick answers

Is CVE-2026-20168 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-20168 being exploited in the wild.
How severe is CVE-2026-20168?
Medium severity, with a CVSS score of 6.5, published 6 May 2026.
Which products and versions are affected?
Cisco Iot Field Network Director All versions prior to 5.0.0-117.
Is there a fix for CVE-2026-20168?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-20168 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-20168?
Check whether you run Cisco Iot Field Network Director at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A path traversal vulnerability exists in the web-based management interface of Cisco IoT Field Network Director (IoT-FND). The root cause is insufficient file access checks when processing user-supplied input through the web interface. An authenticated, remote attacker with low privileges can exploit this by submitting crafted input to bypass directory restrictions. A successful exploit allows the attacker to read arbitrary files on the underlying filesystem that their account should not have permission to access. Cisco has addressed this in version 5.0.0-117; no workarounds are available.

Affected products

  • Cisco IoT Field Network Director (IoT-FND) All versions prior to 5.0.0-117

Timeline

  • 2026-05-06: advisory: Initial public release by Cisco
  • 2026-05-06: disclosed

References

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