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Fencer Vulns
medium 6.5

CVE-2018-4843 json

A vulnerability has been identified in SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All v…

published 2018-03-20 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16629

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

A vulnerability has been identified in SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V1.7.0), SIMATIC S7-1500 Software Controller (All versions < V1.7.0), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.2.16), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.7), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.1), SIMATIC WinAC RTX 2010 (All versions < V2010 SP3), SIMATIC WinAC RTX F 2010 (All versions < V2010 SP3), SINUMERIK 828D (All versions < V4.7 SP6 HF1), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), Softnet PROFINET IO for PC-based Windows systems (All versions). Responding to a PROFINET DCP request with a specially crafted PROFINET DCP packet could cause a denial of service condition of the requesting system.

The security vulnerability could be exploited by an attacker located on the same Ethernet segment (OSI Layer 2) as the targeted device. A manual restart is required to recover the system.

Patch / fix

  • siemens simatic_s7-1500_firmware 1.7.0
  • siemens simatic_s7-400_pn/dp_v6_firmware 6.0.7
  • siemens simatic_s7-410_firmware 8.1

Vendor advisories

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

cisa ICSA-18-079-02 updated cvss 6.5

Siemens SIMATIC, SINUMERIK, and PROFINET IO (Update D)

  • Siemens SIMATIC CP 343-1 (incl. SIPLUS variants) Siemens SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)
    affected: mitigation, no fix planned
  • Siemens SIMATIC CP 443-1 (6GK7443-1EX30-0XE0) < V3.3 Siemens SIMATIC CP 443-1 (6GK7443-1EX30-0XE1) < V3.3 Siemens SIMATIC CP 443-1 Advanced (6GK7443-1GX30-0XE0) < V3.3
    affected: fixed in V3.3, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200S IM151-8 PN/DP CPU (6ES7151-8AB01-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200S IM151-8F PN/DP CPU (6ES7151-8FB01-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0) < V3.3.16
    affected: fixed in V3.3.16, mitigation support.industry.siemens.com
show 23 more
  • Siemens SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0) < V7.0.3 Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0) < V7.0.3 Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0) < V7.0.3 Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0) < V7.0.3 Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0) < V7.0.3
    affected: fixed in V7.0.3, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) < V6.0.9
    affected: fixed in V6.0.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) < V6.0.7
    affected: fixed in V6.0.7, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-410 CPU family (incl. SIPLUS variants) < V8.1
    affected: fixed in V8.1, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) < V1.7.0
    affected: fixed in V1.7.0, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 Software Controller < V1.7.0
    affected: fixed in V1.7.0, mitigation support.industry.siemens.com
  • Siemens SIMATIC WinAC RTX 2010 (6ES7671-0RC08-0YA0) <V2010_SP3 Siemens SIMATIC WinAC RTX F 2010 (6ES7671-1RC08-0YA0) <V2010_SP3
    affected: fixed in V2010, mitigation support.industry.siemens.com
  • Siemens SINUMERIK 828D <V4.7_SP6_HF1
    affected: fixed in V4.7, mitigation
  • Siemens SIPLUS ET 200S IM151-8 PN/DP CPU (6AG1151-8AB01-7AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIPLUS ET 200S IM151-8F PN/DP CPU (6AG1151-8FB01-2AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIPLUS NET CP 443-1 (6AG1443-1EX30-4XE0) < V3.3 Siemens SIPLUS NET CP 443-1 Advanced (6AG1443-1GX30-4XE0) < V3.3
    affected: fixed in V3.3, mitigation support.industry.siemens.com
  • Siemens SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0) < V3.3.16
    affected: fixed in V3.3.16, mitigation support.industry.siemens.com
  • Siemens SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com
  • Siemens SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0) < V3.2.16
    affected: fixed in V3.2.16, mitigation support.industry.siemens.com

5 more affected in the full advisory

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

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 6.1 AV:A/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7
  • Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7
  • Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7
  • Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7
  • Siemens SIMATIC CP 343-1 (incl. SIPLUS variants)
  • Siemens SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)
  • Siemens SIMATIC CP 443-1
  • Siemens SIMATIC CP 443-1 Advanced
  • Siemens SIMATIC ET 200pro IM154-8 PN/DP CPU
  • Siemens SIMATIC ET 200pro IM154-8F PN/DP CPU
  • Siemens SIMATIC ET 200pro IM154-8FX PN/DP CPU
  • Siemens SIMATIC ET 200S IM151-8 PN/DP CPU
  • Siemens SIMATIC ET 200S IM151-8F PN/DP CPU
  • Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)
  • Siemens SIMATIC S7-1500 Software Controller
  • Siemens SIMATIC S7-300 CPU 314C-2 PN/DP
  • Siemens SIMATIC S7-300 CPU 315-2 PN/DP
  • Siemens SIMATIC S7-300 CPU 315F-2 PN/DP
  • Siemens SIMATIC S7-300 CPU 315T-3 PN/DP
  • Siemens SIMATIC S7-300 CPU 317-2 PN/DP
  • Siemens SIMATIC S7-300 CPU 317F-2 PN/DP
  • Siemens SIMATIC S7-300 CPU 317T-3 PN/DP
  • Siemens SIMATIC S7-300 CPU 317TF-3 PN/DP
  • Siemens SIMATIC S7-300 CPU 319-3 PN/DP
  • Siemens SIMATIC S7-300 CPU 319F-3 PN/DP
  • Siemens SIMATIC S7-400 CPU 412-2 PN V7
  • Siemens SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)
  • Siemens SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants)
  • Siemens SIMATIC S7-410 CPU family (incl. SIPLUS variants)
  • Siemens SIMATIC WinAC RTX 2010
  • Siemens SIMATIC WinAC RTX F 2010
  • Siemens SINUMERIK 828D
  • Siemens SIPLUS ET 200S IM151-8 PN/DP CPU
  • Siemens SIPLUS ET 200S IM151-8F PN/DP CPU
  • Siemens SIPLUS NET CP 443-1
  • Siemens SIPLUS NET CP 443-1 Advanced
  • Siemens SIPLUS S7-300 CPU 314C-2 PN/DP
  • Siemens SIPLUS S7-300 CPU 315-2 PN/DP
  • Siemens SIPLUS S7-300 CPU 315F-2 PN/DP
  • Siemens SIPLUS S7-300 CPU 317-2 PN/DP
  • Siemens SIPLUS S7-300 CPU 317F-2 PN/DP
  • Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7
  • Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7
  • Siemens Softnet PROFINET IO for PC-based Windows systems

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns 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.