CVE-2016-9158

HIGH
7.5
CVSS Score
Published: December 17, 2016 at 03:34 AM UTC
Updated: June 17, 2026 at 12:55 AM UTC
23 products affected across 1 vendorSIMATIC S7-300 CPU FirmwareSIMATIC S7-400 CPU FirmwareSIMATIC S7-400 CPU 414-3 Pn /dp

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 V6 and earlier CPU family (All versions), SIMATIC S7-400 V7 CPU family (All versions). Specially crafted packets sent to port 80/tcp could cause the affected devices to go into defect mode. A cold restart is required to recover the system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
siemens-simatic-s7-300-cpu-312 (same device) · siemens-simatic-s7-300-cpu-314 (same device) · siemens-simatic-s7-300-cpu-315-2-dp (same device) · siemens-simatic-s7-300-cpu-315-2-pn-dp (same device) · siemens-simatic-s7-300-cpu-317-2-dp (same device) · siemens-simatic-s7-300-cpu-317-2-pn-dp (same device) · siemens-simatic-s7-300-cpu-319-3-pn-dp (same device)
All versions
siemens-simatic-s7-400-cpu-412-1 (same device) · siemens-simatic-s7-400-cpu-412-2 (same device) · siemens-simatic-s7-400-cpu-412-2-pn (same device) · siemens-simatic-s7-400-cpu-414-2 (same device) · siemens-simatic-s7-400-cpu-414-3 (same device) · siemens-simatic-s7-400-cpu-414-3-pn-dp (same device) · siemens-simatic-s7-400-cpu-416-2 (same device) · siemens-simatic-s7-400-cpu-416-3 (same device) · siemens-simatic-s7-400-cpu-416-3-pn-dp (same device) · siemens-simatic-s7-400-cpu-416f-2 (same device) · siemens-simatic-s7-400-cpu-416f-3-pn-dp (same device) · siemens-simatic-s7-400-cpu-417-4 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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