🛡️ CVE-2026-55052 — sharepoint-server

🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-862 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-55052 is classified as CWE-862: Missing Authorization. No authorisation check is performed before carrying out a restricted action.

Affected software

CVE-2026-55052 is recorded against 1 package.

  • sharepoint-server

Timeline and source

Published on 14 July 2026 and last revised on 16 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

msrc.microsoft.com

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-862
Public Exploit ✅ No
Source NVD
Published 2026-07-14
Updated 2026-08-11
Modified 2026-07-16

Affected Packages

Software From version Fixed in
sharepoint-server — —

Similar Threats

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