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Vulnerability record · CVE-2026-40368 · published 12 May 2026

CVE-2026-40368: Microsoft sharepoint server deserialization of untrusted data vulnerability

Microsoft · Sharepoint Server

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

8.0 CVSS 3.1 High EPSS 2.1% · top 18.8% CWE-502 · Deserialization of untrusted data
8.0CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40368 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-40368), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.