Labcenter Electronics Proteus PDSPRJ File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

The impact of CVE-2026-5493 is significant due to its RCE nature. A successful exploit allows an attacker to gain complete control over the affected system. This could involve installing malware, stealing sensitive data (such as design files and project configurations), modifying system settings, or using the compromised system as a launchpad for further attacks within the network. The requirement for user interaction means attackers might leverage social engineering techniques, such as phishing emails containing malicious PDSPRJ files, to trick users into triggering the vulnerability. The blast radius extends to any data stored or processed by the Proteus software, and potentially to other systems accessible from the compromised machine.

1. 予約済み2026-04-03
2. 公開日2026-04-11
3. 更新日2026-04-13
4. EPSS 更新日2026-04-18

The primary mitigation for CVE-2026-5493 is to upgrade Labcenter Electronics Proteus to version 8.17 SP5 or later, which contains the fix. If immediate upgrading is not possible, consider implementing temporary workarounds. Carefully scrutinize any PDSPRJ files received from untrusted sources before opening them. Implement network segmentation to limit the potential impact of a successful exploit. Consider using a Web Application Firewall (WAF) or proxy to filter potentially malicious PDSPRJ files, although this may not be fully effective. After upgrading, verify the fix by attempting to open a known malicious PDSPRJ file (if available) and confirming that it no longer triggers the vulnerability.