Unauthenticated code execution via unsafe deserialization
Published Jun 1, 2026 · Updated Jun 1, 2026
Deserialization of untrusted data in Dassault Systèmes Teamwork Cloud and Magic Collaboration Studio allows remote attackers to execute code. The vendor has not disclosed the deserialization locus, accepted data format, or unsafe object-construction operation. No credentials or user interaction are required; successful exploitation executes attacker-controlled code on affected 2022x, 2024x, and 2026x servers.
Summary
What happened
Deserialization of untrusted data in Dassault Systèmes Teamwork Cloud and Magic Collaboration Studio allows remote attackers to execute code. The vendor has not disclosed the deserialization locus, accepted data format, or unsafe object-construction operation. No credentials or user interaction are required; successful exploitation executes attacker-controlled code on affected 2022x, 2024x, and 2026x servers.
The record
- CVE
- CVE-2026-7858
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Vendor
- Dassault Systèmes
- Product
- Teamwork Cloud - Enterprise Edition
- Classifications
- CWE-502, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 1, 2026CVE publishedPublication date reported by the CVE source.
- Jun 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=No Magic Release 2022x Golden <=No Magic Release 2022x Refresh2 HF3
- Affected versionversion=No Magic Release 2024x Golden <=No Magic Release 2024x Refresh3 HF1
- Affected versionversion=No Magic Release 2026x Golden <=No Magic Release 2026x Golden HF2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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