Home/CVE/A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.2), SI
CVE
CVE-2011-20002
A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.2), SI
A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.2), SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) (All versions < V2.0.2).
Affected controllers are vulnerable to capture-replay in the communication with the engineering software. This could allow an on-path attacker between the engineering software and the controller to execute any previously recorded commands at a later time (e.g. set the controller to STOP), regardless whether or not the controller had a password configured.
HIGH · CVSS 7.4
EPSS 0.00288
EPSS exploitation odds0.29% · top 79%
Schedule remediation
- CVSS base score ≥ 7.0
No Sigma yet — build one →
YARA rules0
Look this up elsewhere - one-click external pivots
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How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2011-20002, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked.
EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal.
CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score.
Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits.
PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
EPSS exploitation probability
0.29%
Top 79%odds of exploitation in the next 30 days
CVSS metric silhouette
shape grows toward worst-case
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Tech impact
partial
CVSS vector breakdown
Exploitability - how they get in
Attack Vector
Network
Adjacent
Local
Physical
Attack Complexity
Low
High
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Impact - what breaks
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
VECTOR
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:HLifecycle
- 14 Oct 2025Published to NVD
- 16 Jun 2026Last modified
Every entry is a recorded date - NVD publish/modify, CISA KEV add, public exploit disclosure. No inferred events.
Attack path
Full kill chain
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ATT&CK techniques
12Techniques this CVE enables. Pills with a solid outline are high confidence - named directly in ATT&CK or Nuclei, or human-curated by CTID; the rest are inferred from the weakness type using MITRE's CVE Mapping Methodology and the CWE → CAPEC chain. Broad, generic-weakness guesses are filtered out. A small N× marks a technique that N independent sources agree on.
T1021 · Remote Services T1021.002 · SMB/Windows Admin Shares T1040 · Network Sniffing T1114.002 · Remote Email Collection T1133 · External Remote Services T1134.001 · Token Impersonation/Theft T1550.002 · Pass the Hash T1550.003 · Pass the Ticket T1550.004 · Web Session Cookie T1557 · Adversary-in-the-Middle T1558 · Steal or Forge Kerberos Tickets T1558.003 · Kerberoasting
▤ Build a SIEM detection for these techniques
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CAPEC attack patterns
10Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
CAPEC-CAPEC-102 · Session Sidejacking CAPEC-CAPEC-509 · Kerberoasting CAPEC-CAPEC-555 · Remote Services with Stolen Credentials CAPEC-CAPEC-561 · Windows Admin Shares with Stolen Credentials CAPEC-CAPEC-60 · Reusing Session IDs (aka Session Replay) CAPEC-CAPEC-644 · Use of Captured Hashes (Pass The Hash) CAPEC-CAPEC-645 · Use of Captured Tickets (Pass The Ticket) CAPEC-CAPEC-652 · Use of Known Kerberos Credentials CAPEC-CAPEC-701 · Browser in the Middle (BiTM) CAPEC-CAPEC-94 · Adversary in the Middle (AiTM)
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Weakness Classification
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Related CVEs
4CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row. Not a guess.
CVE-2002-0054
SMTP service in (1) Microsoft Windows 2000 and (2) Internet Mail Connector (IMC)...
same CWE-294
CVE-2013-1351
Verax NMS prior to 2.10 allows authentication via the encrypted password without...
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MEDIUM
CVE-2017-6823
Fiyo CMS 2.0.6.1 allows remote authenticated users to gain privileges via a modi...
1
same CWE-294
HIGH
CVE-2017-6034
An authentication bypass by capture-replay issue was discovered in Schneider Ele...
same CWE-294
CRITICAL
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Vendor Advisories
2siemens-csafSSA-625789
cisa-csafcisa-csaf-csaf_files-OT-white-2025-icsa-25-294-03
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References & Sources
1Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.