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CVE-2015-5374 is a denial-of-service vulnerability affecting Siemens SIPROTEC devices that use the EN100 Ethernet module, including firmware variants for PROFINET IO, Modbus TCP, DNP3 TCP, IEC 104, and the EN100 module included in the SIPROTEC Merging Unit 6MU80. Specially crafted UDP packets sent to port 50000 can cause the affected device to become unresponsive and lose service. In affected deployments, exploitation can disable protection and control functionality of the relay or associated device until recovery actions are taken. The issue was reported as affecting firmware versions earlier than the vendor-fixed releases for the respective EN100 firmware variants and related module integration.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository provides two exploit implementations (Python script and Metasploit module) for CVE-2015-5374, a denial of service vulnerability affecting Siemens SIPROTEC 4 and SIPROTEC Compact EN100 Ethernet Modules with firmware versions below V4.25. The exploit works by sending a specially crafted UDP packet to port 50000 of the target device, causing it to crash and require a manual reboot. The Python script (Siemens_SIPROTEC_DoS.py) is a standalone exploit that takes the target IP as an argument and sends the malicious packet. The Metasploit module (siemens_siprotec4.rb) integrates with the Metasploit Framework, allowing for easier exploitation and automation. Both implementations use the same payload and target the same network vector. The repository is well-structured, with a README.md providing usage instructions, background, and references. No hardcoded IPs or domains are present; the only fingerprintable endpoint is the UDP port 50000 on the target device.
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8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Denial-of-service vulnerability in Siemens SIPROTEC protective relays where specially crafted packets to UDP/50000 can cause device failure, highlighted here in the context of ICS attack impact.
Denial-of-service vulnerability affecting Siemens SIPROTEC protective relays, cited here as used to disable protection relays during the Industroyer attack.
A denial-of-service vulnerability in Siemens SIPROTEC 4 IEDs that can place the device into firmware update mode, disabling protection and control functions and requiring power-cycling for recovery.
A denial-of-service vulnerability affecting Siemens SIPROTEC digital relays that can render the relay unresponsive, potentially hampering protective relay functionality in electric grid environments.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.