Quick answers
- Is CVE-2026-5495 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-5495 being exploited in the wild.
- How severe is CVE-2026-5495?
- 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-2026-5495?
- 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-2026-5495 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-5495?
- 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 write vulnerability (CWE-787) exists in Labcenter Electronics Proteus during the parsing of PDSPRJ files. The root cause is a lack of proper validation of user-supplied data within the file structure, leading to a write operation past the end of an allocated buffer. While the attack vector is categorized as local because it requires the user to open a file, it effectively allows remote code execution in the context of the current process if a victim is enticed to open a malicious project file or visit a malicious page. The vendor has indicated the software is no longer in production, and no official patch is available; users are advised to restrict interaction with the product.
Affected products
- Labcenter Electronics Proteus 8.17 SP5
Timeline
- 2025-04-14: disclosed: Vulnerability reported to vendor by ZDI
- 2026-04-06: advisory: ZDI published zero-day advisory
- 2026-04-11: other: CVE published to NVD