CVE-2026-56157CWE-284

Microsoft SharePoint Server Spoofing Vulnerability

Medium · published July 14, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
41.6
In the wild
Unconfirmed
What it is

Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00496 · 41.6th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-07-14T17:09Z
EPSS history
Timeline
  • 14 JUL 17:09Z
    Microsoft SharePoint Server Spoofing Vulnerability
    cvelistv5