Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
E
Unchanged
RL
O
RC
Changed
Affected products
- microsoft / Microsoft SharePoint Enterprise Server 201616.0.0 – 16.0.5561.1001
- microsoft / Microsoft SharePoint Server 201916.0.0 – 16.0.10417.20175
- microsoft / Microsoft SharePoint Server Subscription Edition16.0.0 – 16.0.19725.20434
- microsoft / sharepoint_server16.0.19725.20434
- microsoft / sharepoint_server2016 – 2016
- microsoft / sharepoint_server2019 – 2019
News coverage
- Critical SharePoint RCE flaw exploited to steal machine keysBleepingComputer · 7/21/2026
- Critical SharePoint RCE CVE-2026-50522 Under Active Exploitation After Public PoCThe Hacker News · 7/21/2026
References
Updated 16m ago · 8 sources