What is CVE-2023-46665?

CVE-2023-46665 is a critical-severity vulnerability in Sielco Polyeco1000, classified under Improper Access Control. CVSS score: 9.8/10. Published 2023-10-26.

How severe is CVE-2023-46665?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Sielco Polyeco1000

CVE-2023-46665

Sielco PolyEco1000 is vulnerable to an authentication bypass vulnerability due to an attacker modifying passwords in a POST request and gain unauthorized access to the affected device with administrative privileges.

Published 2023-10-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Sielco Polyeco1000 — versions CPU:2.0.6 FPGA:10.19, CPU:1.9.4 FPGA:10.19, CPU:1.9.3 FPGA:10.19
Sielco Polyeco1000 Firmware — versions 1.9.3, 1.9.4, 2.0.6
Sielco Polyeco300
Sielco Polyeco300 Firmware — versions 2.0.0, 2.0.2, 10.19
Sielco Polyeco500
Sielco Polyeco500 Firmware — versions 1.7.0, 10.16

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.cisa.gov/news-events/ics-advisories/icsa-23-299-07 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2023-46665?: CVE-2023-46665 is a critical-severity vulnerability in Sielco Polyeco1000, classified under Improper Access Control. CVSS score: 9.8/10. Published 2023-10-26.
How severe is CVE-2023-46665?: Critical severity. CVSS v3 base score is 9.8 out of 10.