CVE-2024-48453
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 · uneditedAn issue in INOVANCE AM401_CPU1608TPTN allows a remote attacker to execute arbitrary code via the ExecuteUserProgramUpgrade function
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 · low confidenceThe INOVANCE AM401_CPU1608TPTN PLC has a critical vulnerability in the ExecuteUserProgramUpgrade function that allows remote attackers to execute arbitrary code without authentication. This suggests the firmware upgrade mechanism lacks proper authorization controls, enabling adversaries to inject and execute malicious code on the industrial controller.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 PLC model in your environmentInventory all PLC devices and confirm the exact model number is INOVANCE AM401_CPU1608TPTN. Check device labels, engineering software project files, or network discovery results for this specific model.Affected if The device is an INOVANCE AM401_CPU1608TPTN PLC
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Verify network exposure of the upgrade interfaceReview firewall rules and network segmentation to determine if the PLC is accessible from networks other than a dedicated engineering station VLAN. Check if port 8080 or proprietary ports used by INOVANCE for device management are exposed to untrusted networks.Affected if The PLC management interface is reachable from untrusted networks or the internet
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Confirm ExecuteUserProgramUpgrade function accessibilityUse network scanning (nmap or similar) to probe the PLC for management/firmware upgrade service endpoints. Check if unauthenticated requests to upgrade-related functions are accepted or rejected.Affected if The upgrade function responds without requiring authentication credentials
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Inspect PLC configuration for authentication enforcementAccess the PLC web interface or management console. Review security settings related to program upload, firmware updates, and user authentication. Look for whether ExecuteUserProgramUpgrade requires any credentials or is openly accessible.Affected if The firmware upgrade function has no authentication requirement or allows anonymous access
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Review access logs for upgrade function usageExamine PLC event logs, web server access logs, or network monitoring data for any invocations of ExecuteUserProgramUpgrade or firmware upgrade operations. Look for unexpected timestamps, source IPs, or upgrade activities not initiated by authorized engineers.Affected if Upgrade events exist that were not performed by known authorized engineering stations
Your environment is affected if you have an INOVANCE AM401_CPU1608TPTN PLC with the ExecuteUserProgramUpgrade function exposed on the network without authentication controls.
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 dataIsolate the affected PLC in a dedicated network segment with strict firewall rules limiting access to authorized engineering stations only; contact INOVANCE for firmware patches and verify the upgrade function is disabled if not operationally required.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,776.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-48453 — 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-2024-48453 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
- No spam, self-promotion, credentials, or personal data