Home

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.

PUBLISHED Reserved 2025-05-22 | Published 2025-10-14 | Updated 2025-10-14 | Assigner siemens




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-20: Improper Input Validation

Product status

Default status
unknown

Any version before V2.0.3
affected

Default status
unknown

Any version before V2.0.3
affected

References

cert-portal.siemens.com/productcert/html/ssa-625789.html

cve.org (CVE-2011-20001)

nvd.nist.gov (CVE-2011-20001)

Download JSON