External risk intelligence

3DEXPERIENCE 3DPassport Improper Authorization Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-16279

3DEXPERIENCE is a collaborative enterprise platform frequently deployed as a web-based application to enable remote access and collaboration across different organizations, making it common for such portals to be reachable via the public internet.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

An Improper Authorization vulnerability has been identified in 3DPassport for 3DSwymer. This issue could potentially allow an unauthorized individual to access user accounts within the 3DEXPERIENCE platform, impacting the confidentiality of user information. The main concern is confirming relevance and exposure for our specific deployments.

  • Unauthorized account access is possible.
  • Consider if this platform is in use.
  • Verify if 3DEXPERIENCE is deployed.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by tricking a user into interacting with a malicious link or element. This would allow them to bypass authorization checks and gain access to certain user accounts within 3DSwymer.

  • No prior authentication is needed.
  • User interaction with malicious content triggers it.
  • Unauthorized access to user accounts.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthorized user to access certain user accounts within the 3DPassport system. This exposure may occur when an attacker can trick a user into performing a malicious action.

  • User accounts could be compromised.
  • Via an attacker-controlled malicious action.
  • Unauthorized access to user accounts.

Operational Fix

Recommended remediation, mitigation, and detection steps

This Improper Authorization vulnerability in 3DEXPERIENCE's 3DPassport could allow an unauthenticated attacker to access user accounts. Responsibility likely falls to application owners and platform teams to identify deployments, assess business criticality and reachability, and then coordinate remediation. The initial focus should be on locating all instances of the affected software, confirming its exposure and importance, and identifying the accountable team before planning a fix.

  • Application and platform teams own the issue.
  • Verify reachability and business criticality.
  • Plan remediation based on identified risk.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is 3DSwymer and the 3DPassport component?

3DSwymer is a collaborative environment within the 3DEXPERIENCE platform used for managing projects and team interaction. 3DPassport serves as the centralized identity and authentication service for these applications, ensuring that users are who they claim to be when accessing shared data or tools.

What does an Improper Authorization vulnerability mean for CVE-2026-16279?

This vulnerability, classified as CWE-285, occurs when software fails to correctly verify the identity or permissions of a user before granting access to protected resources. In this case, it means the security controls meant to limit access to user accounts within 3DPassport are not effectively enforcing those boundaries.

How is this 3DPassport vulnerability triggered?

An attacker triggers this by inducing a user to interact with a malicious link or web element. It is important to note that the flaw is not triggered by simple network presence alone; the interaction of an active user session with external malicious content is the necessary step to bypass the authorization checks.

Is my 3DEXPERIENCE deployment at risk?

According to Halo Surface Signal, 3DEXPERIENCE is frequently deployed as a web-based application to facilitate remote collaboration, which often places the platform on the public internet. If your instance is internet-facing, it is more likely to be reachable by external threats than internal-only deployments.

What should I do first to address CVE-2026-16279?

Begin by auditing your environment to locate all active instances of the 3DEXPERIENCE platform running releases R2023x through R2026x. Once identified, work with the relevant application and platform teams to confirm if the software is exposed to the internet and assess the business impact to prioritize your security response.

References