CVE-2015-5374

Home/CVE/A vulnerability has been identified in Firmware variant PROFINET IO for EN100 Ethernet module : All versions < V1.04.01;

CVE

A vulnerability has been identified in Firmware variant PROFINET IO for EN100 Ethernet module : All versions < V1.04.01;

A vulnerability has been identified in Firmware variant PROFINET IO for EN100 Ethernet module : All versions < V1.04.01.

Firmware variant Modbus TCP for EN100 Ethernet module : All versions < V1.11.00.

Firmware variant DNP3 TCP for EN100 Ethernet module : All versions < V1.03.

Firmware variant IEC 104 for EN100 Ethernet module : All versions < V1.21.

EN100 Ethernet module included in SIPROTEC Merging Unit 6MU80 : All versions < 1.02.02. Specially crafted packets sent to port 50000/UDP could cause a denial-of-service of the affected device. A manual reboot may be required to recover the service of the device.

HIGH · CVSS 7.8 EPSS 0.83908

Act now

EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
EPSS percentile: top 1% of all CVEs by exploitation likelihood
Metasploit module exists (rank: Normal)
Public exploit or PoC is available
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

Look this up elsewhere - one-click external pivots

NVD CVE.org CISA Vulners Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

▸ How to read a CVE - triage first, then detect and patch

This page is every public fact about CVE-2015-5374, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.

Triage: should I act now? Four signals, and they are not interchangeable:

CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked. EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal. CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score. Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.

How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.

Then what - two workflows:

Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits. PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.

Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).

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Weakness Classification

CWE-19Data Processing Errors

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Affected Products & Versions

siemens siprotec firmwareall versions

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Public Exploits & PoCs

These PoC and exploit links come from public sources and are not verified to be safe or functional. Review the code before running anything, and treat unverified entries as untrusted.
dosSiemens SIPROTEC 4 and SIPROTEC Compact EN100 Ethernet Module < 4.25 - Denial of Service2018-02-16
poccan/CVE-2015-5374-DoS-PoC (nomi-sec)
pocARPSyndicate/cve-scores (trickest)
pocARPSyndicate/cvemon (trickest)
pocahmed22-glitch/Understanding-Advanced-Persistent-Threats-APTs- (trickest)
pocwww.exploit-db.com · 44103www.exploit-db.com

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Metasploit Modules

Weaponised exploit modules in the Metasploit Framework. Rank is Metasploit’s reliability rating - Excellent/Great/Good means dependable, real-world exploit code (a strong “act now” signal), not a fragile PoC.

Normalauxiliary/dos/scada/siemens_siprotec4

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