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Fencer Vulns
critical 9.8

CVE-2023-42769 json

Sielco Radio Link and Analog FM Transmitters Improper Access Control

published 2023-10-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-47201

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

The cookie session ID is of insufficient length and can be exploited by brute force, which may allow a remote attacker to obtain a valid session, bypass authentication, and manipulate the transmitter.

Vendor advisories

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

cisa ICSA-23-299-08 updated cvss 9.8

Sielco Radio Link and Analog FM Transmitters

  • Sielco Analog FM transmitter (EXC30GT) 1.7.7 Sielco Analog FM transmitter (EXC100GT) 1.7.4 Sielco Analog FM transmitter (EXC120GT) 1.5.4 Sielco Analog FM transmitter (EXC120GX) 2.12 Sielco Analog FM transmitter (EXC300GT) 1.7.4 Sielco Analog FM transmitter (EXC300GX) 2.11
    +9 more products
    Sielco Analog FM transmitter (EXC1000GT) 1.6.3 Sielco Analog FM transmitter (EXC1000GX) 2.08 Sielco Analog FM transmitter (EXC1600GX) 2.10, 2.08 Sielco Analog FM transmitter (EXC2000GX) 2.10 Sielco Analog FM transmitter (EXC3000GX) 2.07 Sielco Analog FM transmitter (EXC5000GT) 1.7.4 Sielco Analog FM transmitter (EXC5000GX) 2.12, 2.06 Sielco Radio Link (EXC19) 2.00, 1.55 Sielco Radio Link (RTX19) 2.06, 2.05, 1.60, 1.59
    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

1.09% chance of exploitation in the next 30 days, higher than 65% 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 Analog FM transmitter
  • Sielco Radio Link

Classification

Weakness
  • CWE-284 Improper Access Control
  • CWE-307 Improper Restriction of Excessive Authentication Attempts

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.