Authenticated code execution via OS command injection
Published Jun 1, 2026 · Updated Jun 1, 2026
OS command injection in Microsoft SharePoint Server 16.0 allows remote authenticated users to execute code through a network request. Microsoft identifies improper neutralization of special elements passed to an operating-system command, but does not disclose the affected endpoint or code path. Exploitation requires low-privileged authorization and user interaction; successful exploitation executes attacker-controlled commands in the SharePoint server context.
Summary
What happened
OS command injection in Microsoft SharePoint Server 16.0 allows remote authenticated users to execute code through a network request. Microsoft identifies improper neutralization of special elements passed to an operating-system command, but does not disclose the affected endpoint or code path. Exploitation requires low-privileged authorization and user interaction; successful exploitation executes attacker-controlled commands in the SharePoint server context.
The record
- CVE
- CVE-2026-47294
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Vendor
- Microsoft
- Product
- Microsoft SharePoint Enterprise Server 2016
- Classifications
- CWE-78, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 1, 2026CVE publishedPublication date reported by the CVE source.
- Jun 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16.0.0 <16.0.5552.1002
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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