Quick answers
- Is CVE-2026-5493 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-5493 being exploited in the wild.
- How severe is CVE-2026-5493?
- High severity, with a CVSS score of 7.8, published 11 April 2026.
- Which products and versions are affected?
- Labcenter Electronics Proteus 8.17 SP5.
- Is there a fix for CVE-2026-5493?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-5493 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-5493?
- Check whether you run Labcenter Proteus. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An out-of-bounds (OOB) write vulnerability (CWE-787) exists within the PDSPRJ file parsing component of Labcenter Electronics Proteus. The root cause is a lack of proper validation of user-supplied data within the project file, which allows a write operation to occur past the end of an allocated buffer. While categorized as a remote code execution threat, the attack vector is local/user-interaction-dependent, requiring a target to open a malicious file or visit a malicious page. Successful exploitation allows for arbitrary code execution in the context of the current process. The vendor has indicated the software is no longer in production, and no official patch is available; users are advised to restrict interaction with untrusted PDSPRJ files.
Affected products
- Labcenter Electronics Proteus 8.17 SP5
Timeline
- 2025-04-14: disclosed: Vulnerability reported to vendor by ZDI
- 2026-04-06: advisory: Zero Day Initiative published advisory ZDI-26-255
- 2026-04-11: other: CVE published to NVD