Microsoft SharePoint Server Remote Code Execution Vulnerability
cve-program · CVE-2026-66805
PublishedDeserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Read the publisher's advisoryAffected versions, risk and source history
Exploitation and risk
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cve-program · CVE-2026-66805
PublishedMicrosoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Source published
- 11 Aug 2026 17:07:01 UTC
- Source modified
- 10 Nov 2026 22:00:50 UTC
- Saved here
- 11 Nov 2026 00:21:23 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 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