WismanSec/sharepoint-2026-poc

PoC

PoC, IOCs, and detection logic for the SharePoint /_trust WS-Federation BinaryFormatter deserialization chain. Lab reconstruction covering unauthenticated RCE, in-process machine key theft, and the artifacts each variant leaves behind. SharePoint 2016, 2019, and Subscription Edition. CVE-2026-50522, CVE-2026-45659, CVE-2026-56164, CVE-2026-58644.

view exploit source poc_in_githubauthor WismanSecpublished 2026-07-26catalog poc_in_github

exploited CVEs (1)

Known CVEs related to this entry.

ID	severity	EPSS	exploitable	published
CVE-2026-50522US	—OT critical	3.04% (87th)	KEV	2026-07-14
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

scry

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