CVE-2014-5414
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 · uneditedBeckhoff Embedded PC images before 2014-10-22 and Automation Device Specification (ADS) TwinCAT components do not restrict the number of authentication attempts, which makes it easier for remote attackers to obtain access via a brute-force attack.
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 confidenceBeckhoff Embedded PC and TwinCAT ADS components lack authentication attempt rate limiting, allowing remote attackers to perform unlimited login attempts via brute-force to discover valid credentials and gain unauthorized access to the industrial control system.
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 dataall 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
-
Identify exposed ADS portsScan network for open TCP ports 48898 and 48899 (default Beckhoff ADS ports) using nmap or netstat to determine if the service is listening on accessible network interfacesAffected if Ports 48898/tcp or 48899/tcp are open and accessible from untrusted networks (e.g., internet or DMZ)
-
Verify firewall protectionCheck firewall rules on the host or network perimeter to see if inbound access to ADS ports is restricted to authorized IP addresses or management networksAffected if No firewall rules exist or allow unrestricted access from untrusted sources to ADS ports
-
Test for rate limitingAttempt multiple consecutive failed authentication attempts against the ADS service from an external system to observe whether the service throttles or blocks repeated login attemptsAffected if The system allows unlimited consecutive authentication attempts without any delay, lockout, or throttling mechanism
-
Confirm ADS service statusVerify that the TwinCAT ADS service (TcServer.exe or similar) is running and accepting network connections on the affected systemAffected if ADS service is running and accepting network connections without additional access controls
The environment is affected if ADS ports are network-accessible without firewall restrictions and the service permits unlimited brute-force authentication attempts without rate limiting or account lockout protections.
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.
dbcve · scopedUpdate Beckhoff Embedded PC images to versions released after 2014-10-22 and apply any available ADS TwinCAT patches. Implement network segmentation to restrict access to management interfaces and deploy intrusion detection to monitor for brute-force patterns.
Beckhoff Embedded PC images and TwinCAT ADS components dated 2014-10-22 or later (latest available version)
- 1. Identify the current Beckhoff Embedded PC image version running in your environment
- 2. Identify the current TwinCAT ADS version running in your environment
- 3. Obtain the updated Beckhoff Embedded PC images dated 2014-10-22 or later from official Beckhoff download sources (download.beckhoff.com)
- 4. Obtain updated TwinCAT ADS components dated 2014-10-22 or later from official Beckhoff download sources
- 5. Review Beckhoff release notes for any specific migration instructions
- 6. Schedule maintenance window for the update
- 7. Back up current configurations before applying updates
- 8. Apply the updated Embedded PC images and TwinCAT ADS components
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-5414 — 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-2014-5414 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data