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Fencer Intel
medium 5.3

CVE-2016-4784 json

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

published 2016-05-31 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5769

cvss
5.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

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; SIPROTEC 7SJ686 : All versions < V 4.83; SIPROTEC 7UT686 : All versions < V 4.01; SIPROTEC 7SD686 : All versions < V 4.03; SIPROTEC 7SJ66 : All versions < V 4.20. The integrated web server (port 80/tcp) of the affected devices could allow remote attackers to obtain sensitive device information if network access was obtained.

Vendor advisories

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

cisa ICSA-16-140-02 updated cvss 5.3

Siemens SIPROTEC Information Disclosure Vulnerabilities (Update B)

  • Siemens EN100 Ethernet module included in SIPROTEC 4 <=V4.26 Siemens EN100 Ethernet module included in SIPROTEC Compact <=V4.26 Siemens SIPROTEC Compact model 7SJ80 with Ethernet Service Interface on Port A Firmware <=V4.75 Siemens SIPROTEC Compact models 7RW80 with Ethernet Service Interface on Port A Siemens SIPROTEC Compact models 7SJ81 with Ethernet Service Interface on Port A Siemens SIPROTEC Compact models 7SK81 with Ethernet Service Interface on Port A
    affected: mitigation

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 ICSA-17-187-03F updated cvss 5.3

ICSA-17-187-03F Siemens SIPROTEC 4 and SIPROTEC Compact (Update F)

  • Siemens EN100 Ethernet module included in SIPROTEC Merging Unit 6MU80 <1.02.02
    affected: mitigation siemens.com
  • Siemens Firmware variant DNP3 TCP for EN100 Ethernet module <V1.03 Siemens Firmware variant IEC 104 for EN100 Ethernet module <V1.21 Siemens Firmware variant Modbus TCP for EN100 Ethernet module <V1.11.00 Siemens Firmware variant PROFINET IO for EN100 Ethernet module <V1.04.01
    affected: vendor fix, mitigation support.industry.siemens.com
  • Siemens SIPROTEC 7SD686 <V_4.03, <V_4.05
    affected: mitigation siemens.com
  • Siemens SIPROTEC 7SJ66 <V_4.20, <V_4.30
    affected: vendor fix, mitigation support.industry.siemens.com
  • Siemens SIPROTEC 7SJ686 <V_4.83, <V_4.87 Siemens SIPROTEC 7UT686 <V_4.01, <V_4.02
    affected: mitigation siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-17-334-01 updated cvss 5.3

Siemens SWT3000

  • Siemens IEC 61850 firmware < 4.29.01 Siemens TPOP firmware < 01.01.00
    affected: vendor fix siemens.com

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 ICSA-17-187-02 updated cvss 5.3

Siemens Reyrolle

  • Siemens EN100 Ethernet modules as optional for Reyrolle < 4.29.01
    affected: vendor fix

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

Exploit prediction

2.68% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel 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.