CVE-2025-53770
published 2025-07-20CVE-2025-53770: Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware…
critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
KEVEXPLOIT
CISA Known Exploited Vulnerabilitydue 2025-07-21
Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.
Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild.
Microsoft is preparing and fully testing a comprehensive update to address this vulnerability. In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_sharepoint_enterprise_server_2016 | >= 16.0.0 < 16.0.5513.1001 | 16.0.5513.1001 |
| microsoft | microsoft_sharepoint_server_2019 | >= 16.0.0 < 16.0.10417.20037 | 16.0.10417.20037 |
| microsoft | microsoft_sharepoint_server_subscription_edition | >= 16.0.0 < 16.0.18526.20508 | 16.0.18526.20508 |
| microsoft | sharepoint_server | < 16.0.18526.20508 | 16.0.18526.20508 |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
| msrc | microsoft_sharepoint_enterprise_server_2016 | — | — |
| msrc | microsoft_sharepoint_server_2019 | — | — |
| msrc | microsoft_sharepoint_server_subscription_edition | — | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vulncheck8.8HIGH
cisa8.8HIGH