CVE-2026-22318

Stack-Based Buffer Overflow in File Transfer Parameter Handling

4.9 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.36%Up 0.3 points since Mar 18, 2026

What each source reports

CVE List Score used 4.9

Stack-Based Buffer Overflow in File Transfer Parameter Handling

Record: CVE-2026-22318
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-121
Updated: 2026-11-02

EUVDEUVD-2026-12787 4.9

Record: EUVD-2026-12787
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-2957-vcfc-fpfc 4.9

A stack-based buffer overflow vulnerability in the device's file transfer parameter workflow...

Record: GHSA-2957-vcfc-fpfc
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-121
Updated: 2026-11-02

NVD 4.9

Record: CVE-2026-22318
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-121
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-22318 is a medium vulnerability (CVSS 4.9) in Phoenix Contact Fl Nat 2008, published March 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. No source names a fixed version.