Cyber Resilience

CVE-2026-47294

HighRCE

Published: 01 June 2026

Published
01 June 2026
Modified
03 June 2026
KEV Added
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Patch
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CVSS Score v3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0064 45.8th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-47294 is a high-severity OS Command Injection (CWE-78) vulnerability in Microsoft Sharepoint Server. Its CVSS base score is 8.0 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 45.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Deserialization RCE in network-accessible SharePoint server directly enables remote exploitation of a public-facing web application.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2026-32201Same product: Microsoft Sharepoint Server
CVE-2025-54897Same product: Microsoft Sharepoint Server
CVE-2026-26114Same product: Microsoft Sharepoint Server
CVE-2025-21344Same product: Microsoft Sharepoint Server
CVE-2026-35439Same product: Microsoft Sharepoint Server
CVE-2025-49712Same product: Microsoft Sharepoint Server
CVE-2026-26106Same product: Microsoft Sharepoint Server
CVE-2026-20947Same product: Microsoft Sharepoint Server
CVE-2025-59237Same product: Microsoft Sharepoint Server
CVE-2026-40368Same product: Microsoft Sharepoint Server

Affected Assets

microsoft
sharepoint server
2016, 2019 · ≤ 16.0.19725.20280

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References