CVE-2011-20002 describes a capture-replay vulnerability in Siemens SIMATIC S7-1200 CPU V1 and V2 families (including SIPLUS variants) with firmware versions prior to V2.0.2. An on-path attacker can intercept and replay commands between engineering software and the controller, potentially forcing the controller into a STOP state, even if a password is configured. This vulnerability carries a high CVSS score of 7.4, indicating a network-based attack with high impact on integrity and availability, but high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Siemens | SIMATIC S7-1200 CPU V1 Family (Incl. SIPLUS Variants) | >= 0, < V2.0.2CNA affecteddefault unknown | |
| Siemens | SIMATIC S7-1200 CPU V2 Family (Incl. SIPLUS Variants) | >= 0, < V2.0.2CNA affecteddefault unknown |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.