Stack-based Buffer Overflow Vulnerability in Device File Installation by Vendor
CVE-2026-22319

4.9MEDIUM

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-2026-22319?

A stack-based buffer overflow vulnerability exists in the file installation workflow of specific devices, allowing attackers with high privileges to exploit it by sending oversized POST parameters. This can result in an overflow of a fixed-size stack buffer within the internal process, which may lead to Denial of Service attacks. Organizations should prioritize patching affected products to mitigate potential risks.

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Deploy the Patch

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:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gabriele Quagliarella from Nozomi Networks
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