Risk Letters

Exploited vulnerability

CVE-2026-65660

TLP:CLEAR

Microsoft SharePoint Code Injection Vulnerability

Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.

Facts

  • Vendor: Microsoft
  • Product: SharePoint
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 8.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 25 September 2026
  • First known exploitation: 25 September 2026
  • CISA's deadline for US federal agencies: 28 September 2026
  • Weakness: CWE-94
  • First seen by Risk Letters: 25 September 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD