CVE-2025-53771CWE-287

Microsoft SharePoint Server Spoofing Vulnerability

Medium · published July 20, 2025

Patch now

High probability of exploitation

CVSS calls it medium at 6.5. It sits in the 100.0th percentile for exploit probability.

CVSS v3.1
6.5
EPSS
100%
Percentile
100.0
In the wild
Unconfirmed
What it is

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.99890 · 100.0th percentile
Weakness
CWE-287 · Improper Authentication
Published
2025-07-20T22:16Z
EPSS history
Timeline
  • 20 JUL 22:16Z
    Microsoft SharePoint Server Spoofing Vulnerability
    cvelistv5