Improper Restriction of Excessive Authentication Attempts in Sielco PolyEco1000

published 2023-10-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58039

cvss: 9.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

Sielco PolyEco1000 uses a weak set of default administrative credentials that can be easily guessed in remote password attacks and gain full control of the system.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-299-07 updated 2023-10-26 cvss 9.1

Sielco PolyEco FM Transmitter

Sielco PolyEco300 FPGA_10.19_CPU_2.0.2, FPGA_10.19_CPU_2.0.0 Sielco PolyEco500 FPGA_10.16_CPU_1.7.0 Sielco PolyEco1000 FPGA_10.19_CPU_2.0.6, FPGA_10.19_CPU_1.9.4, FPGA_10.19_CPU_1.9.3
affected: mitigation sielco.org

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 21 mo ago (2025-01-16)

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Sielco PolyEco1000

Classification

Weakness

CWE-307 Improper Restriction of Excessive Authentication Attempts

References

cisa.gov /news-events/ics-advisories/icsa-23-299-07
third-party-advisory, us-government-resource

Sources

CVE List CVE-2023-5754
NVD CVE-2023-5754

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary