CVE-2024-39375: TELSAT marKoni FM Transmitters are vulnerable to an attacker bypassing authentication and gaining administrator privileges.

PriorityP261critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.57%

42.7th percentile

TELSAT marKoni FM Transmitters are vulnerable to an attacker bypassing authentication and gaining administrator privileges.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
markoni	markoni-d_firmware	< 2.0.1	2.0.1
markoni	markoni-d_fm_transmitters	< 2.0.1	2.0.1
markoni	markoni-dh_firmware	< 2.0.1	2.0.1
markoni	markoni-dh_fm_transmitters	< 2.0.1	2.0.1

Detection & IOCsextracted from sources · hover to see the quote

→CVE-2024-39375 is a client-side authentication bypass (CWE-603) affecting TELSAT marKoni FM Transmitters (Markoni-D and Markoni-DH) all versions prior to 2.0.1, allowing unauthenticated remote attackers to gain administrator privileges. Monitor for unauthenticated administrative access attempts against these devices. ↗
→A public Proof of Concept (PoC) exists for this vulnerability, authored by Gjoko Krstic. Treat any exploitation attempts as high-confidence malicious activity given PoC availability. ↗
→The vulnerability is exploitable remotely with low attack complexity and no privileges or user interaction required (CVSS v3.1: AV:N/AC:L/PR:N/UI:N). Prioritize network-level detection for exposed marKoni FM Transmitter management interfaces. ↗

·Authentication is performed client-side (CWE-603), meaning server-side enforcement is absent. Any network-accessible management interface on unpatched devices (all versions prior to 2.0.1) should be treated as effectively unauthenticated. ↗
·Related CVE-2024-39374 describes hard-coded credentials for a hidden admin account on the same devices, which may be chained with CVE-2024-39375 for full administrative compromise. ↗
·Affected products are Markoni-D (Compact) FM Transmitters and Markoni-DH (Exciter+Amplifiers) FM Transmitters, all versions prior to 2.0.1. Version 2.0.1 is the patched release. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.09.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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