CVE-2021-40368

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2021
Source publication: Apr 12, 2022
Source updated: Apr 21, 2025
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

SIMATIC S7-400 CPU 412-1 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 412-1 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 412-1 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 412-2 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 412-2 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 412-2 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 412-2 PN/DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 412-2 PN/DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 412-2 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 414-2 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 414-2 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 414-2 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 414-3 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 414-3 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 414-3 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 414-3 PN/DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 414-3 PN/DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 414-3 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 414F-3 PN/DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 414F-3 PN/DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 414F-3 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 416-2 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 416-2 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 416-2 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 416-3 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 416-3 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 416-3 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 416-3 PN/DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 416-3 PN/DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 416-3 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 416F-2 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 416F-2 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 416F-2 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 416F-3 PN/DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 416F-3 PN/DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 416F-3 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 CPU 417-4 DP V7

Vendor: Siemens
Product: SIMATIC S7-400 CPU 417-4 DP V7
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 CPU 417-4 DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)

Vendor: Siemens
Product: SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)
Platforms: Unknown
Default status: unknown

SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V6.0.10	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants)

Vendor: Siemens
Product: SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants)
Platforms: Unknown
Default status: unknown

SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V10.1	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants)

Vendor: Siemens
Product: SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants)
Platforms: Unknown
Default status: unknown

SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V8.2.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIPLUS S7-400 CPU 414-3 PN/DP V7

Vendor: Siemens
Product: SIPLUS S7-400 CPU 414-3 PN/DP V7
Platforms: Unknown
Default status: unknown

SIPLUS S7-400 CPU 414-3 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIPLUS S7-400 CPU 416-3 PN/DP V7

Vendor: Siemens
Product: SIPLUS S7-400 CPU 416-3 PN/DP V7
Platforms: Unknown
Default status: unknown

SIPLUS S7-400 CPU 416-3 PN/DP V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions < V7.0.3	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIPLUS S7-400 CPU 416-3 V7

Vendor: Siemens
Product: SIPLUS S7-400 CPU 416-3 V7
Platforms: Unknown
Default status: unknown

SIPLUS S7-400 CPU 416-3 V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed

SIPLUS S7-400 CPU 417-4 V7

Vendor: Siemens
Product: SIPLUS S7-400 CPU 417-4 V7
Platforms: Unknown
Default status: unknown

SIPLUS S7-400 CPU 417-4 V7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
All versions	`affected`	Unavailable	Unavailable	Unavailable	None listed