CVE intelligence and bounded remediation

CVE-2022-47374 — Siemens 6Es7412-2Ek07-0Ab0 Firmware security vulnerability

High CVSS 7.5

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.

Severity
High
CVSS
7.5 (3.1)
Published
2023-12-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-674

Affected products

  • siemens / 6es7412-2ek07-0ab0_firmware
  • siemens / 6es7414-3em07-0ab0_firmware
  • siemens / 6es7414-3fm07-0ab0_firmware
  • siemens / 6es7416-3es07-0ab0_firmware
  • siemens / 6es7416-3fs07-0ab0_firmware
  • siemens / 6ag1414-3em07-7ab0_firmware

Showing 6 representative product identities from 25 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

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