CVE-2026-65660
Microsoft SharePoint Server Remote Code Execution Vulnerability
KEVHIGH 8.8EPSS 2.1%
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Affected
- Microsoft · Microsoft SharePoint Enterprise Server 2016 · Microsoft SharePoint Server 2019 · Microsoft SharePoint Server Subscription Edition
- CVSS v3.1 MICROSOFT
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 2.10% chance of exploitation in the next 30 days, 81st percentile
- CISA KEV
- added 2026-09-25
- Published
- 2026-08-11
- Updated
- 2026-10-08
Proof-of-concept exploits (2)
- https://blog.previdian.com/cve-2026-65660-previdian-observes-two-stage-sharepoint-exploit…
- ShadowForge-Cyber/CVE-2026-65660-Poc1★ · 2026-09-25
Security advisories
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660
- https://blog.previdian.com/cve-2026-65660-previdian-observes-two-stage-sharepoint-exploit…