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Fencer Vulns
high 7.5

CVE-2022-47374 json

A vulnerability has been identified in SIMATIC PC-Station Plus (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions), SIMATIC S7-40…

published 2023-12-12 2 y ago modified 2026-06-17 4 mo ago also EUVD-2022-50141

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

A vulnerability has been identified in SIMATIC PC-Station Plus (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions), SINAMICS S120 (incl. SIPLUS variants) (All versions < V5.2 SP3 HF15), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions). The affected products do not handle HTTP(S) requests to the web server correctly.

This could allow an attacker to exhaust system resources and create a denial of service condition for the device.

Vendor advisories

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

cisa ICSA-23-348-05 updated cvss 7.5

Siemens SIMATIC and SIPLUS Products

  • Siemens SIMATIC PC-Station Plus Siemens SIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0) Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0) Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0) Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0) Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0)
    affected: workaround, no fix planned
  • Siemens SINAMICS S120 (incl. SIPLUS variants) <V5.2_SP3_HF15
    affected: fixed in V5.2, workaround support.industry.siemens.com
  • Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0) Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0)
    affected: workaround, no fix planned

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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Siemens SIMATIC PC-Station Plus
  • Siemens SIMATIC S7-400 CPU 412-2 PN V7
  • 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 SINAMICS S120 (incl. SIPLUS variants)
  • Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7
  • Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7

Classification

Weakness

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.