dbcve.org
Simatic Cp 1543 1 FirmwareOperating system · Siemens

CVE-2024-50310

HIGH · 7.5 CVSS v3.1 Published 2024-11-12
Fix available
A fix is available. Upgrade to 4.0.50 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click Patch available

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 · unedited
A vulnerability has been identified in SIMATIC CP 1543-1 V4.0 (6GK7543-1AX10-0XE0) (All versions >= V4.0.44 < V4.0.50). Affected devices do not properly handle authorization. This could allow an unauthenticated remote attacker to gain access to the filesystem.

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
How this class of weakness works · CWE-863

An authorization check exists but is flawed, so it passes when it should fail. Attackers probe roles and object references to find the gap. Remediation means centralising and correctly implementing the access-control logic, then testing it against every role.

General guidance for the incorrect authorization class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Simatic Cp 1543 1 FirmwareOperating system
Affected:>= 4.0.44, < 4.0.50

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
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 · scoped
Upgrade available Upgrade to 4.0.50 or later
Fixed in 4.0.50
Vendor patch cert-portal.siemens.com →
Recommended fix High confidence

Firmware V4.0.50 or later

  1. Download the firmware update from the official Siemens support portal (cert-portal.siemens.com/productcert/html/ssa-654798.html)
  2. Access the SIMATIC CP 1543-1 web interface or use Siemens STEP 7/TIA Portal for firmware updates
  3. Navigate to the firmware update section of the device management interface
  4. Upload the firmware version 4.0.50 or later
  5. Apply the firmware update following Siemens upgrade procedures
  6. Reboot the device to complete the installation
  7. Verify the firmware version has been successfully updated to >= V4.0.50
Caveat Firmware upgrades in industrial control devices may require downtime and should be tested in a staging environment before production deployment; ensure backup of current configuration

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-50310 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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