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Fencer Intel
high 8.8

CVE-2025-47166 in the critical feed json

Microsoft SharePoint Server Remote Code Execution Vulnerability

published last yr. modified 4mo ago also EUVD-2025-17733

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
22.6%
EPSS 22.6% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Patch / fix

  • Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5504.1001
  • Microsoft Microsoft SharePoint Server 2019 16.0.10417.20018
  • Microsoft Microsoft SharePoint Server Subscription Edition 16.0.18526.20396

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Timeline

  1. Published
  2. First public exploit (EDB-52349)

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

22.57% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-52349 Microsoft SharePoint 2019 - NTLM Authentication remote, 2025-07-02

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Microsoft SharePoint Enterprise Server 2016
  • Microsoft Microsoft SharePoint Server 2019
  • Microsoft Microsoft SharePoint Server Subscription Edition

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.