CRITICAL 9.8 Microsoft
CVE-2026-20963
Microsoft SharePoint Remote Code Execution Vulnerability
Microsoft Security Update 2026-Jan: Microsoft SharePoint Remote Code Execution Vulnerability
Affected Products
- Microsoft SharePoint Enterprise Server 2016
- Microsoft SharePoint Server 2019
- Microsoft SharePoint Server Subscription Edition
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963
- https://nvd.nist.gov/vuln/detail/CVE-2026-20963
This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-01-13 via Microsoft. EPSS score: 29.5% (top 2% of all CVEs by exploitation probability). Affected: Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition.
Risk Timeline
CVE Disclosed2026-01-13 · 202 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2026-20963Related Vulnerabilities
| CVE | Title | Severity | CVSS |
|---|---|---|---|
| CVE-2026-56191 | Microsoft Exchange Online Tampering Vulnerability | CRITICAL | 10.0 |
| CVE-2026-57106 | Data Quality Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-33819 | Microsoft Bing Remote Code Execution Vulnerability | CRITICAL | 10.0 |
| CVE-2026-32186 | Microsoft Bing Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-35431 | Microsoft Entra ID Entitlement Management Spoofing Vulnerability | CRITICAL | 10.0 |
| CVE-2026-23652 | Microsoft Power Pages Remote Code Execution Vulnerability | CRITICAL | 10.0 |
vulnfeed aggregates 9166 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.