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CVE-2024-33492 Siemens CVE debrief

CVE-2024-33492 is a high-severity vulnerability in Siemens Solid Edge, published on May 14, 2024. The vulnerability involves an out-of-bounds read past the end of an allocated structure when parsing specially crafted PAR (part) files. This memory safety defect could allow an attacker to execute arbitrary code within the context of the current process. The CVSS 3.1 score of 7.8 reflects high impacts to confidentiality, integrity, and availability, with a local attack vector requiring user interaction (opening a malicious file). Siemens has addressed this issue in Solid Edge V224.0 Update 5 and later versions.

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 operations, particularly those in manufacturing, aerospace, automotive, and industrial design sectors where PAR files are routinely exchanged with external partners, suppliers, or customers. Security teams in OT/ICS environments should prioritize this vulnerability due to potential lateral movement risks if Solid Edge is deployed on engineering workstations with access to operational networks.

Technical summary

The vulnerability exists in the PAR file parsing component of Siemens Solid Edge. When processing a malformed PAR file, the application reads beyond the bounds of an allocated memory structure. This out-of-bounds read can be leveraged to achieve arbitrary code execution in the context of the Solid Edge process. The attack requires local access and user interaction to open a malicious file, limiting remote exploitability but maintaining significant risk for environments where users exchange CAD files externally.

Defensive priority

HIGH

Recommended defensive actions

  • Update Siemens Solid Edge to V224.0 Update 5 or later version
  • Implement policy to block or quarantine untrusted PAR files from external sources
  • Train users to recognize and avoid opening PAR files from untrusted origins
  • Apply defense-in-depth controls per CISA ICS recommended practices for industrial control systems
  • Monitor for anomalous Solid Edge process behavior that may indicate exploitation attempts

Evidence notes

Vulnerability disclosed via CISA ICS advisory ICSA-24-137-09 with Siemens SSA-589937 as primary source. CVSS vector confirms local attack vector with user interaction required.

Official resources

2024-05-14