Critical Remote Code Execution in Labcenter Electronics Proteus (CVE‑2026‑5493) Threatens EDA Supply Chain
What It Is — A zero‑day out‑of‑bounds write flaw in the PDSPRJ project‑file parser of Labcenter Electronics Proteus enables an attacker to execute arbitrary code with the privileges of the running process. The vulnerability is tracked as CVE‑2026‑5493.
Exploitability — Exploitation requires user interaction (opening a malicious .pdsprj file or visiting a crafted web page). No public exploit code is known, but the CVSS 7.8 score (AV:L/AC:L/PR:N/UI:R) indicates a high likelihood of successful exploitation once the malicious file is opened.
Affected Products — Labcenter Electronics Proteus (all versions that can parse PDSPRJ files). The vendor has indicated the product and its installer are no longer in production, but many engineering firms and OEMs still rely on legacy installations.
TPRM Impact —
- Engineering and manufacturing partners that embed Proteus in their design workflows may become an attack surface for supply‑chain compromise.
- Compromise of a design workstation can lead to insertion of malicious code into firmware or PCB layouts, affecting downstream hardware products.
Recommended Actions —
- Inventory all third‑party tools; confirm whether any active Proteus installations exist across your organization and its suppliers.
- Isolate affected workstations from the network and disable automatic opening of PDSPRJ files until mitigated.
- Apply any vendor‑issued patches or, if unavailable, upgrade to a supported alternative EDA platform.
- Monitor endpoint logs for anomalous process creation linked to Proteus and for execution of unsigned binaries.
- Communicate the risk to engineering partners and include the vulnerability in third‑party risk assessments.