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CVE-2026-45659· microsoft / sharepoint server· CWE-502
Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
Exploited in the wild. Listed by CISA on 2026-07-01; known to be used by ransomware.
80.2%likelihood of exploitation, next 30 days
100%of all CVEs are less likely
Nonecheck to confirm it
Microsoft SharePoint Server contains a deserialization of untrusted data vulnerability which allows an authorized attacker to execute code over a network.
No ready check is stored for this CVE. Confirm it by hand from the references.
References
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