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ICS Advisories

Advisories specifically aimed at industrial control systems — from CISA ICS-CERT and directly from vendors (including Siemens, ABB, Schneider Electric, WAGO and Phoenix Contact) — including revision history (initial publication, Update A, Update B) and linked CVEs.

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Advisory data: live connection— last retrieved: 8 November 2026 at 08:48.

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SSA-628843

SSA-628843: Out of Bound Read Vulnerability in TPM 2.0

Siemens — SIMATIC CN 4100

Siemens ProductCERTmiddel

Published

14 April 2026

Last update

13 October 2026

Linked CVEs

Affected sectors

Risk evaluation

The products listed below contain a vulnerability that could allow an attacker to perform an out-of-bound read, potentially leading to information disclosure or denial of service of the TPM. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.

Mitigation summary

Currently no fix is planned

Revision history (3)
  1. Initial publication — 14 April 2026

    Publication Date

  2. Update A — 11 August 2026

    Added no fix planned for SIMATIC ITP1000 and for SIMATIC Field PG M5. Added fix for SIMATIC Field PG M6

  3. Update B — 13 October 2026

    Added fix for SIMATIC IPC627E / IPC647E / IPC677E / IPC847E

Official source: Siemens ProductCERT