CVE-2025-40829: HIGH Severity Vulnerability in Siemens Simcenter Femap | Secably CVE Database

Summary

CVE-2025-40829 is a high-severity vulnerability affecting Siemens Simcenter Femap. It stems from an uninitialized memory error during the parsing of specially crafted SLDPRT files, potentially allowing an attacker to execute arbitrary code within the context of the running process.

Technical Details

This vulnerability arises from the improper handling of memory allocation when processing SLDPRT files within Simcenter Femap. Specifically, the application fails to properly initialize a memory region before using it. An attacker can exploit this by crafting a malicious SLDPRT file that triggers the use of this uninitialized memory. When the application attempts to read or write to this memory, it can lead to unpredictable behavior, including crashes, information disclosure, or, more critically, the execution of arbitrary code. The root cause is the lack of proper validation and sanitization of data within the SLDPRT file format, allowing an attacker to control the values used in memory operations. This control can be leveraged to overwrite critical program data or inject malicious code into the application's memory space.

The vulnerability is triggered during the parsing stage of the SLDPRT file. The parsing routine attempts to access a memory location that has not been assigned a valid value. This can happen if the SLDPRT file contains malformed data or unexpected values that cause the parsing logic to deviate from its intended path. The uninitialized memory may contain remnants of previous operations, which can then be used in subsequent calculations or data processing, leading to the exploitable condition.

Affected Products and Versions

This vulnerability affects the following product and versions:

Siemens Simcenter Femap versions prior to V2512

Impact Assessment

Successful exploitation of CVE-2025-40829 can have significant consequences for affected systems and organizations.

Remote Code Execution: An attacker can execute arbitrary code on the affected system with the privileges of the user running Simcenter Femap. This allows the attacker to install malware, steal sensitive data, or compromise the entire system.
Data Breach Risk: If the attacker gains control of the system, they can access and exfiltrate sensitive data, including design files, intellectual property, and customer information.
System Compromise: The attacker can use the compromised system as a foothold to attack other systems on the network, leading to a wider breach.
Denial of Service: The vulnerability can also be exploited to cause a denial-of-service condition, rendering Simcenter Femap unusable.

Remediation

To mitigate the risk posed by CVE-2025-40829, Siemens recommends the following actions:

Immediate Actions

Apply the Security Update: Upgrade Siemens Simcenter Femap to version V2512 or later. This version contains a fix for the uninitialized memory vulnerability.
Exercise Caution with SLDPRT Files: Be cautious when opening SLDPRT files from untrusted sources. Verify the source and integrity of the file before opening it in Simcenter Femap.

Long-term Solutions

Implement Security Best Practices: Follow security best practices for software development and deployment, including regular security audits and penetration testing.
Stay Informed: Subscribe to security advisories from Siemens and other vendors to stay informed about the latest vulnerabilities and security updates.

References

Detection & Scanning

Detecting CVE-2025-40829 requires analyzing Simcenter Femap's behavior when processing SLDPRT files. This can be achieved through:

Vulnerability Scanners: Utilize vulnerability scanners that are capable of detecting unpatched versions of Simcenter Femap.
Security Information and Event Management (SIEM) Systems: Configure SIEM systems to monitor for suspicious activity related to SLDPRT file processing, such as crashes or unexpected memory access.
Manual Analysis: Analyze Simcenter Femap's logs and memory dumps for evidence of uninitialized memory access.

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