CVE-2026-63516CWE-502insecure-deserialization

CVE-2026-63516

Medium · published August 11, 2026

CVSS v3.1
6.5
EPSS
2%
Percentile
79.2
In the wild
Unconfirmed
What it is

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized 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:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.01874 · 79.2th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-08-11T21:18Z
Affected products (3)
ProductVersionsFixed in
microsoft/sharepoint_server< 16.0.19725.2052216.0.19725.20522
microsoft/sharepoint_serverall versions—
microsoft/sharepoint_serverall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63516 · [email protected]
EPSS history
Timeline
  • 11 AUG 17:03Z
    Microsoft SharePoint Server Spoofing Vulnerability
    cvelistv5