Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – < 16.0.5556.1005 | 16.0.5556.1005 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – < 16.0.10417.20153 | 16.0.10417.20153 |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 – < 16.0.19725.20384 | 16.0.19725.20384 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Microsoft SharePoint Server - WS-Federation BinaryFormatter Deserialization RCE http/cves/2026/CVE-2026-58644.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Advisories 3
- WID-SEC-2026-2317 Microsoft Office Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 12, 2026
- NCSC-2026-0237 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Jul 21, 2026
- MSRC-CVE-2026-58644 Microsoft SharePoint Remote Code Execution Vulnerability Microsoft Security Response Center · Jul 15, 2026
References
- Microsoft SharePoint Remote Code Execution Vulnerability vendor-advisory patch