Quick answers
- Is CVE-2026-5496 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-5496 being exploited in the wild.
- How severe is CVE-2026-5496?
- 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-2026-5496?
- 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-2026-5496 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-5496?
- 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
A type confusion vulnerability (CWE-843) exists within the PDSPRJ file parsing engine of Labcenter Electronics Proteus. The flaw stems from insufficient validation of user-supplied data within the project file structure, allowing an attacker to force the application to interpret data as an incompatible type. While categorized as a remote code execution vulnerability, the attack vector is local/user-interaction-dependent, requiring a target to open a crafted file or visit a malicious page. Successful exploitation allows for arbitrary code execution in the context of the process. The vendor has indicated the affected version is no longer in production, and no official patch is available.
Affected products
- Labcenter Electronics Proteus 8.17 SP5
Timeline
- 2025-04-14: disclosed: Vulnerability reported to vendor
- 2025-10-16: other: Vendor stated software is no longer in production
- 2026-04-06: advisory: ZDI published zero-day advisory
- 2026-04-11: disclosed: CVE published to NVD