PatchSiren cyber security CVE debrief

CVE-2026-9024 Dassault Systèmes CVE debrief

A stored cross-site scripting (XSS) vulnerability in DELMIA Service Process Engineer affects the Process Experience Studio component across 3DEXPERIENCE R2024x through R2026x. The flaw, rated CVSS 3.1 8.7 (High), could allow an authenticated attacker with low privileges to execute arbitrary script code in a victim's browser session. The attack requires user interaction and has a changed scope (S:C), with high impacts to confidentiality and integrity but no availability impact. The vendor has published a security advisory acknowledging the issue. No known exploitation in ransomware campaigns has been reported, and the vulnerability is not listed in CISA KEV.

Vendor: Dassault Systèmes
Product: DELMIA Service Process Engineer
CVSS: HIGH 8.7
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-01
Original CVE updated: 2026-06-01
Advisory published: 2026-06-01
Advisory updated: 2026-06-01

Who should care

Organizations using DELMIA Service Process Engineer within 3DEXPERIENCE R2024x–R2026x, particularly those with multi-user Process Experience Studio deployments where stored content is shared across sessions. Security teams responsible for PLM/MES platform hardening and application security engineers managing XSS defenses in enterprise engineering software.

Technical summary

The vulnerability exists in the Process Experience Studio component of DELMIA Service Process Engineer, part of the 3DEXPERIENCE platform. A stored XSS flaw (CWE-79) allows script injection that persists and executes in other users' browser sessions. Affected versions span from Release 3DEXPERIENCE R2024x through R2026x. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, user interaction required, changed scope, high confidentiality and integrity impact, and no availability impact. The vendor has issued a dedicated security advisory. NVD analysis is pending as of publication.

Defensive priority

HIGH

Recommended defensive actions

Apply security updates from Dassault Systèmes when available per vendor advisory
Review and restrict user permissions within Process Experience Studio to least-privilege principles
Implement Content Security Policy (CSP) headers and output encoding defenses for web-based 3DEXPERIENCE components
Monitor for anomalous script execution or unauthorized data access within DELMIA Service Process Engineer sessions
Validate that input fields in Process Experience Studio sanitize user-supplied content before storage and rendering

Evidence notes

CVE published 2026-06-01; modified same day. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N. Weakness: CWE-79. Vendor reference confirms Dassault Systèmes (3ds.com) as source. NVD status: Awaiting Analysis.

Official resources

2026-06-01