PT-2026-40200 · Microsoft · Sharepoint Server

Published 2026-05-12 · Updated 2026-05-13 · CVE-2026-40365

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Office SharePoint (affected versions not specified)

Description Insufficient granularity of access control allows an authorized attacker to execute arbitrary code over a network, which can affect the system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-1220

Related Identifiers

BDU:2026-06817

CVE-2026-40365

Affected Products

Sharepoint Server

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-40365 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-40365 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40365 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06817 · Security Note
• https://reddit.com/r/u_all-in-one-wisper/comments/1tbytog/daily_wisper_report_patch_tuesday_may_12_2026 · Reddit Post
• https://t.me/EchelonEyes/4581 · Telegram Post
• https://t.me/true_secator/8196 · Telegram Post