Quick answers
- Is CVE-2026-16279 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-16279 being exploited in the wild.
- How severe is CVE-2026-16279?
- Critical severity, with a CVSS score of 9.3, published 27 August 2026.
- Which products and versions are affected?
- Dassault SystèMes 3DSwymer 3DEXPERIENCE R2023x through R2026x.
- Is there a fix for CVE-2026-16279?
- 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-2026-16279 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-16279?
- Check whether you run Dassault SystèMes 3DSwymer at an affected version. 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
The vulnerability is an improper authorization flaw in the 3DPassport authentication component of 3DSwymer. Attackers can bypass authorization controls to gain access to user accounts across affected releases (3DEXPERIENCE R2023x through R2026x). The attack requires network access to the 3DSwymer service but no prior authentication. Successful exploitation allows attackers to impersonate legitimate users and access sensitive project data, design files, and collaborative content. Patches are expected to be available from Dassault Systèmes for all affected versions.
Affected products
- Dassault Systèmes 3DSwymer 3DEXPERIENCE R2023x through R2026x
Timeline
- 2026-08-27: disclosed
- 2026-09-08: advisory