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CVE-2024-33493 Siemens CVE debrief

CVE-2024-33493 is a high-severity out-of-bounds read vulnerability in Siemens Solid Edge, published on 2024-05-14. The flaw occurs when parsing specially crafted PAR (part) files, allowing an attacker to execute arbitrary code in the context of the current process. The vulnerability requires local access and user interaction, with an attacker needing to convince a victim to open a malicious file. Siemens has released a vendor fix in V224.0 Update 5, and CISA recommends avoiding untrusted PAR files as an interim mitigation. No known exploitation in ransomware campaigns has been reported, and the vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog.

Vendor
Siemens
Product
Solid Edge
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2024-05-14
Original CVE updated
2024-05-14
Advisory published
2024-05-14
Advisory updated
2024-05-14

Who should care

Organizations using Siemens Solid Edge for CAD/CAM/CAE operations, particularly those exchanging PAR files with external partners or receiving files from untrusted sources. Engineering firms, manufacturing organizations, and supply chain participants in Siemens PLM ecosystems should prioritize patching.

Technical summary

The vulnerability exists in the PAR file parsing component of Siemens Solid Edge, where an out-of-bounds read past the end of an allocated structure can be triggered by a malformed file. This memory safety defect may lead to code execution within the current process context. The attack vector requires local access and user interaction (opening a malicious file), with no privileges required. The confidentiality, integrity, and availability impacts are all rated high.

Defensive priority

high

Recommended defensive actions

  • Apply Siemens Solid Edge V224.0 Update 5 or later to remediate this vulnerability
  • Avoid opening untrusted PAR files in Solid Edge as an interim defensive measure
  • Implement application whitelisting and least-privilege execution for CAD workstations handling external files
  • Monitor for suspicious PAR file attachments in email and collaboration platforms
  • Review and update incident response procedures for CAD/PLM environment compromises

Evidence notes

Vulnerability details sourced from CISA CSAF advisory ICSA-24-137-09 and Siemens security advisory SSA-589937. CVSS 3.1 vector: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-33493 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-33493

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-33493 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-33493

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-137-09.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-589937.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-589937.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/pdf/ssa-589937.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/txt/ssa-589937.txt

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-137-09

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.