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CVE-2026-66805: sharepoint server 2016, 2019; +1 more affected products
CVE-2026-66805. CVSS 3.1 base score 8.8 (HIGH, Vendor/CNA). EPSS 0.02044 (percentile 0.80907), scored 20-Oct-2026.
Affected technology
sharepoint server · before 16.0.19725.20522 (exclusive)
microsoft
sharepoint server · 2016
microsoft
sharepoint server · 2019
microsoft
Microsoft SharePoint Server Subscription Edition · 16.0.0 to before 16.0.20326.20190
Microsoft
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
An authorized attacker can execute code over a network. Vendor/CNA’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high.
- CWE
- CWE-502
- CCR priority
- 35.7 /100 (P4)
- CVSS 3.1
- 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
- EPSS
- 0.02044 · percentile 0.80998 · 2026-10-21
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-22 01:10:55.718059+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-22 01:08:24.561609+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-66805.html