CVE-2014-2252
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedSiemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition) via crafted PROFINET packets, a different vulnerability than CVE-2014-2253.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceDenial of service vulnerability in Siemens SIMATIC S7-1200 CPU PLC devices running firmware prior to version 4.0. Remote attackers can send specially crafted PROFINET packets to trigger a defect-mode transition, causing the PLC to enter a fault state and disrupt industrial process operations.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 3.0.2= 3.0all versionsall versionsall versionsall versionsall versionsCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:A/AC:L/Au:N/C:N/I:N/A:C
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the SIMATIC S7-1200 modelLocate the PLC hardware nameplate or access the device properties via TIA Portal or STEP 7 to confirm the exact model number (e.g., CPU 1211c, 1212c, 1214c, 1215c, or 1217c)Affected if The device is any of these models: CPU 1211c, 1212c, 1214c, 1215c, or 1217c
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Check the firmware versionAccess the PLC via TIA Portal or STEP 7, go to the device overview, and record the firmware version listed under the CPU propertiesAffected if The firmware version is 3.0.2 or lower, or exactly version 3.0
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Confirm PROFINET is enabledIn TIA Portal or STEP 7, open the PLC device properties and verify if PROFINET interface is configured and enabled under the PROFINET sectionAffected if PROFINET interface is enabled and the PLC is connected to a network where it can receive PROFINET traffic
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Review network exposureInspect the network configuration to determine if the PLC's PROFINET port (typically port 102 for S7 communication, and PROFINET uses Ethernet) is accessible from untrusted networks or the internetAffected if The PLC's PROFINET interface is reachable from networks outside the trusted industrial zone
A user is affected if they operate a SIMATIC S7-1200 CPU (specifically 1211c, 1212c, 1214c, 1215c, or 1217c) with firmware version 3.0.2 or lower, or any version of those models, and the PROFINET interface is network-accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate SIMATIC S7-1200 firmware to version 4.0 or later. Additionally, implement network segmentation and filter/proxy PROFINET traffic at the perimeter to block malicious packets from untrusted networks.
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-2252 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2014-2252 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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