7.5
High
CVE-2011-20001 A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl
Description
A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.3), SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) (All versions < V2.0.3). The web server interface of affected devices improperly processes incoming malformed HTTP traffic at high rate. This could allow an unauthenticated remote attacker to force the device entering the stop/defect state, thus creating a denial of service condition.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) 2.0 | earliest → < 2.0.3 | 2.0.3 |
| SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) 2.0 | earliest → < 2.0.3 | 2.0.3 |