CVEvulnerability

CVE-2018-4850

7.5 HIGH Published 2018-05-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-05-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-20

Description

A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2), SIMATIC S7-400H CPU hardware version 4.5 and below (All versions). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart.

Affected configurations

• siemens simatic s7-400 firmware (<= 4.0) • siemens simatic s7-400 firmware (< 5.2) • siemens simatic s7-400h firmware (<= 4.5)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References