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CVE-2026-22318

Stack-Based Buffer Overflow in File Transfer Parameter Handling

MEDIUM
4.9
CVSS Score
Published: March 18, 2026 at 07:33 AM UTC
Updated: June 17, 2026 at 10:19 AM UTC
77 products affected across 1 vendorFl Switch 2308 Pn FirmwareFl Switch 2314-2sfp Pn FirmwareFl Switch 2206-2fx Firmware

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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A stack-based buffer overflow vulnerability in the device's file transfer parameter workflow allows a high-privileged attacker to send oversized POST parameters, causing memory corruption in an internal process, resulting in a DoS attack.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fl Nat 2008 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Nat 2208 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Nat 2304-2gc 2SFP Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2005 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2008 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2008F Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2016 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2105 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2108 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement
Fl Switch 2116 Firmware· Phoenix Contact
60%
0.0.0 ≤ v < 3.530.0.0
Affected range stops below 3.53, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUMCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-121

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