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CVE-2026-7858 is a critical 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. The available content states that the platform core processes serialized input objects used to manage distributed user states and fails to properly validate incoming serialized data before reconstructing objects. A remote attacker can supply malicious serialized data, triggering unsafe deserialization and achieving arbitrary code execution on the underlying host. The issue is described as unauthenticated and network exploitable, with CVSS v3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical unauthenticated remote code execution vulnerability caused by untrusted deserialization in No Magic Teamwork Cloud and related CATIA Magic Collaboration Studio releases.
A deserialization of untrusted data vulnerability that can lead to unauthenticated remote code execution in affected Teamwork Cloud and Magic Collaboration Studio releases.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.