Buffer Overflow Vulnerability in WebUI of Vendor Product
CVE-2026-22316

6.5MEDIUM

Key Information:

Vendor

Phoenix Contact

Status
Fl Switch 2005
Fl Switch 2008
Fl Switch 2016
Fl Switch 2105
Vendor
CVE Published:
18 March 2026

What is CVE-2026-22316?

A vulnerability exists in the webUI of the affected product, where a remote attacker holding user privileges can exploit the TFTP Filename setting through a crafted POST request. This leads to a stack-based buffer overflow, potentially allowing a denial-of-service (DoS) attack, disrupting normal operations and affecting system availability.

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Affected Version(s)

FL NAT 2008 0.0.0 < 3.53

FL NAT 2208 0.0.0 < 3.53

FL NAT 2304-2GC-2SFP 0.0.0 < 3.53

References

https://certvde.com/de/advisories/VDE-2025-104

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gabriele Quagliarella from Nozomi Networks
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