CVE-2026-58644
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
9.8
CVSS 3.1
15.9 %
EPSS (current)
2026-07-16
KEV addition
No
Ransomware
Timeline
Publication, first public exploit and KEV addition on a day axis.
Key facts
Vendor / product: Microsoft / SharePoint
Published: 2026-07-14 · Due (CISA): 2026-07-19
CWE: CWE-502 · EU list: no
Exploit references (metadata only)
| Source | Reference | Title | Date |
|---|---|---|---|
| nuclei | http/cves/2026/CVE-2026-58644.yaml | Microsoft SharePoint Server - WS-Federation BinaryFormatter Deserialization RCE | – |
References only — no downloads or instructions.