CVE-2011-20001CWE-20

A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl

High · published October 14, 2025

CVSS v4.0
8.7
EPSS
0%
Percentile
39.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00468 · 39.3th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2025-10-14T09:14Z
EPSS history
Timeline
  • 14 OCT 09:14Z
    A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl
    cvelistv5