Summary
generated automatically from NVD dataCVE-2026-65660 is a code injection flaw (CWE-94) in Microsoft Office SharePoint, affecting SharePoint Server. An attacker with low-level authorized access can exploit it over a network to execute arbitrary code, with no user interaction required. It carries a CVSS v3.1 score of 8.8 (HIGH), with high impact on confidentiality, integrity and availability, and CISA lists it in its KEV catalog as actively exploited.
NVD description
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
⚠️ Actively exploited — CISA KEV
This CVE was added to CISA's Known Exploited Vulnerabilities catalog on 2026-09-25. It is confirmed exploited in the wild and must be patched as a priority.
Remediation deadline (US federal agencies): 2026-09-28
EPSS · FIRST.org
2.1%probability of exploitation in the next 30 days
Higher than 81% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-16, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.
CVSS v3.1 Score
Information
- Published
- 11 août 2026
- Updated
- 26 sept. 2026
- Status
- Analyzed
- Source
- secure@microsoft.com
Affected products
Weaknesses (CWE)
References (3)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660PatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65660US Government Resource
Similar CVEs
Other vulnerabilities of type CWE-94
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