CVE-2018-4850
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2018
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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.
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 (incl. F) CPU hardware version 4.0 and below, SIMATIC S7-400 (incl. F) CPU hardware version 5.0, SIMATIC S7-400H CPU hardware version 4.5 and below
- Vendor
- Siemens AG
- Product
- SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below, SIMATIC S7-400 (incl. F) CPU hardware version 5.0, SIMATIC S7-400H CPU hardware version 4.5 and below
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below : All versions | affected | Unavailable | Unavailable | Unavailable | None listed |
| SIMATIC S7-400 (incl. F) CPU hardware version 5.0 : All firmware versions < V5.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| SIMATIC S7-400H CPU hardware version 4.5 and below : All versions | affected | Unavailable | Unavailable | Unavailable | None listed |