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Fencer Vulns
critical 9.8

CVE-2023-46665 json

Improper Access Control in Sielco PolyEco1000

published 2023-10-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-50856

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

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.

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 cvss 9.8

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

Exploit prediction

0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

References

Sources

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.