How severe is CVE-2026-7858?

CVE-2026-7858 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-7858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7858?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-7858 have an EU (EUVD) identifier?

Yes. CVE-2026-7858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33583.

When was CVE-2026-7858 published?

CVE-2026-7858 was published on 2026-06-01 and last updated on 2026-06-17.

CVE-2026-7858

CVE-2026-7858 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33583
Weakness: CWE-502
Published: 2026-06-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-7858?: 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.
How severe is CVE-2026-7858?: CVE-2026-7858 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-7858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7858?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-7858 have an EU (EUVD) identifier?: Yes. CVE-2026-7858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33583.
When was CVE-2026-7858 published?: CVE-2026-7858 was published on 2026-06-01 and last updated on 2026-06-17.

References

https://www.3ds.com/trust-center/security/security-advisories/cve-2026-7858

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