What is CVE-2023-23444?

CVE-2023-23444 is a high-severity vulnerability in Sick Fx0-Gent00000, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2023-05-12.

How severe is CVE-2023-23444?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Sick Fx0-Gent00000

CVE-2023-23444

Missing Authentication for Critical Function in SICK Flexi Classic and Flexi Soft Gateways with Partnumbers 1042193, 1042964, 1044078, 1044072, 1044073, 1044074, 1099830, 1099832, 1127717, 1069070, 1112296, 1051432, 1102420, 1127487, 1121596, 1121597 allows an unauthenticated remote attacker to influence the availability of the device by changing the IP settings of the device via broadcasted UDP packets.

Vulnerability class: Broken Authentication

Published 2023-05-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.2th percentile), scored 2026-10-26.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

sick.com/psirt (issue-tracking, Vendor Advisory)
sick.com/.well-known/csaf/white/2023/sca-2023-0003.pdf (vendor-advisory, Vendor Advisory)
sick.com/.well-known/csaf/white/2023/sca-2023-0003.json (x_csaf, Vendor Advisory)

Frequently asked questions

What is CVE-2023-23444?: CVE-2023-23444 is a high-severity vulnerability in Sick Fx0-Gent00000, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2023-05-12.
How severe is CVE-2023-23444?: High severity. CVSS v3 base score is 7.5 out of 10.