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CVE-2026-7858

Dassault Systèmes Teamwork Cloud - Standard Edition, Teamwork Cloud - Business Edition, Teamwork Cloud - Business Pro Edition

A Deserialization of Untrusted Data vulnerability affecting Teamwork Cloud from No Magic Release 2022x through No Magic Release 2026x and Magic Collaboration Studio from CATIA Magic Release 2022x through CATIA Magic Release 2026x could lead to an unauthenticated remote code execution.

CVSS
9.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.06.01
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 9.8

Vulnerability overview

A Deserialization of Untrusted Data vulnerability affecting Teamwork Cloud from No Magic Release 2022x through No Magic Release 2026x and Magic Collaboration Studio from CATIA Magic Release 2022x through CATIA Magic Release 2026x could lead to an unauthenticated remote code execution.

Affected product and versions

Product
Dassault Systèmes Teamwork Cloud - Standard Edition, Teamwork Cloud - Business Edition, Teamwork Cloud - Business Pro Edition
Affected versions
>= No Magic Release 2022x Golden <= No Magic Release 2022x Refresh2 HF3, >= No Magic Release 2024x Golden <= No Magic Release 2024x Refresh3 HF1, >= No Magic Release 2026x Golden <= No Magic Release 2026x Golden HF2, >= CATIA Magic Release 2022x Golden <= CATIA Magic Release 2022x Refresh2 HF3, >= CATIA Magic Release 2024x Golden <= CATIA Magic Release 2024x Refresh3 HF1, >= CATIA Magic Release 2026x Golden <= CATIA Magic Release 2026x Golden HF2
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Dassault Systèmes Teamwork Cloud - Standard Edition, Teamwork Cloud - Business Edition, Teamwork Cloud - Business Pro Edition and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-502