CVE-2026-35439
published 2026-05-12CVE-2026-35439: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
PriorityP262high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
2.03%
78.9th percentile
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_sharepoint_enterprise_server_2016 | >= 16.0.0 < 16.0.5552.1002 | 16.0.5552.1002 |
| microsoft | microsoft_sharepoint_server_2019 | >= 16.0.0 < 16.0.10417.20128 | 16.0.10417.20128 |
| microsoft | microsoft_sharepoint_server_subscription_edition | >= 16.0.0 < 16.0.19725.20280 | 16.0.19725.20280 |
| microsoft | sharepoint_server | < 16.0.19725.20280 | 16.0.19725.20280 |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
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GHSA
GHSA-x84h-h468-6jpc: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network
ghsa_unreviewed·2026-05-12
CVE-2026-35439 [HIGH] CWE-502 GHSA-x84h-h468-6jpc: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
VulDB
Microsoft SharePoint Server 2.0/16.0.5548.1003 deserialization
vuldb·2026-05-12
CVE-2026-35439 [CRITICAL] Microsoft SharePoint Server 2.0/16.0.5548.1003 deserialization
A vulnerability categorized as critical has been discovered in Microsoft SharePoint Server 2.0/16.0.5548.1003. This vulnerability affects unknown code. The manipulation results in deserialization.
This vulnerability was named CVE-2026-35439. The attack may be performed from remote. There is no available exploit.
It is advisable to upgrade the affected component.
No detection rules found.
No public exploits indexed.
2026-05-12
Published