CVE-2026-47294
📛 CVE Title
Microsoft SharePoint: CVE-2026-47294: Microsoft SharePoint Server Remote Code Execution Vulnerability
Description
Microsoft SharePoint: CVE-2026-47294: Microsoft SharePoint Server Remote Code Execution Vulnerability
Description (MITRE) cveawg.mitre.org
Pulled from cveawg.mitre.org/api/cve/CVE-2026-47294 on 2026-07-27. Shown when MITRE's text differs from the cvelistV5 mirror.
Improper neutralization of special elements used in an os command ('os command injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- MEDIUM
- CVSS score
- 5.0 / 10
- CVSS vector
AV:N/AC:M/Au:S/C:C/I:C/A:C- Effective score
- 5.0 / 10 MEDIUM source: CNA overview
- MSRC score
- 8.0 / 10 HIGH MS rating: Important · Remote Code Execution
- CWE(s)
-
CWE-78 - Reserved
- —
- Published
- 2026-05-29 00:00 UTC
- Last updated
- 2026-06-19 14:40 UTC
- Source
- https://www.rapid7.com/db/vulnerabilities/microsoft-sharepoint-cve-2026-47294/
- Linked Threat
- CVE-2026-47294 — CVE-2026-47294
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-06-01 19:16:53 UTC
- NVD last modified
- 2026-07-22 08:10:00 UTC
- NVD CVSS v3.1
- 8.0 / 10 HIGH source: secure@microsoft.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H- Exploitability subscore
- 2.1 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0049 (probability of exploitation in next 30 days)
- EPSS percentile
- 39.31% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27
NVD / KEV / EPSS data refreshed 2026-07-27 20:47 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-33745 - Assigner
- microsoft
- Published
- Jun 1, 2026, 6:26:43 PM
- Updated
- Jun 19, 2026, 4:13:22 PM
- EUVD base score (CVSS 3.1)
-
8.0 / 10
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - EUVD-reported EPSS
- 0.4900
- Vendors
- Microsoft
- Products
-
Microsoft SharePoint Server 2019 (16.0.0 <16.0.10417.20128)Microsoft SharePoint Server Subscription Edition (16.0.0 <16.0.19725.20280)Microsoft SharePoint Enterprise Server 2016 (16.0.0 <16.0.5552.1002)
- Aliases
-
GHSA-chp7-cgwg-984j
ENISA description: Improper neutralization of special elements used in an os command ('os command injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
EUVD references (1)
Microsoft Security Response Center MSRC
Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-11 02:04 UTC (source: CVRF).
- MS severity
- Important
- Impact
- Remote Code Execution
- MS CVSS base score
- 8.0 / 10 (temporal 7.0)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Exploit assessment
- Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
- Release
- 2026-May
Microsoft remediations / KB articles (6)
- 5002868 — Vendor Fix / Security Update (fixed build 16.0.5552.1002)
- https://support.microsoft.com/help/5002868 — None Available / 5002868
- 5002870 — Vendor Fix / Security Update (fixed build 16.0.10417.20128)
- https://support.microsoft.com/help/5002870 — None Available / 5002870
- 5002863 — Vendor Fix / Security Update (fixed build 16.0.19725.20280)
- https://support.microsoft.com/help/5002863 — None Available / 5002863
Microsoft FAQ (3)
According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution?
This attack requires a client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.
How could an attacker exploit the vulnerability?
In a network-based attack, an authenticated attacker, as at least a Site Owner, could write arbitrary code to inject and execute code remotely on the SharePoint Server.
I am running SharePoint Server 2016. Do the updates for SharePoint Enterprise Server 2016 also apply to the version I am running?
Yes. The same KB number applies to both SharePoint Server 2016 and SharePoint Enterprise Server 2016. Customers running either version should install the security update to be protected from this vulnerability.
Affected products — CPE 2.3 (3) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (13)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- 5002868 msrc
- 5002870 msrc
- 5002863 msrc
- https://nvd.nist.gov/vuln/detail/CVE-2026-47294 tenable:nvd.nist.gov
- https://www.first.org/epss/ tenable:www.first.org
- http://cwe.mitre.org/data/definitions/78.html rapid7:cwe.mitre.org
- https://support.microsoft.com/help/5002870 rapid7:support.microsoft.com
- https://www.cve.org/CVERecord?id=CVE-2026-47294 rapid7:www.cve.org
- https://support.microsoft.com/help/5002868 rapid7:support.microsoft.com
- https://attackerkb.com/topics/CVE-2026-47294 rapid7:attackerkb.com
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-33745 rapid7:euvd.enisa.europa.eu
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47294 rapid7:msrc.microsoft.com
- https://support.microsoft.com/help/5002863 rapid7:support.microsoft.com
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47294 secure@microsoft.com Vendor Advisory
Remediations (19)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cvefeed.io
The following products are affected by CVE-2026-47294 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below. ID Vendor Product Action 1 Microsoft sharepoint_server 2 Microsoft sharepoint_enterprise_server_2016 3 Microsoft sharepoint_server_2016 4 ...
2026-06-05 12:07 UTC -
web:feedly.com
Mitigation Apply the available security patch immediately. Restrict network access to SharePoint servers to trusted users and networks. Monitor for suspicious deserialization activities and code execution patterns on SharePoint systems.
2026-06-05 12:07 UTC -
web:mondoo.com
CVE-2026-47294 - HIGH severity: Microsoft SharePoint Server Remote Code Execution Vulnerability
2026-06-05 12:07 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-06-05 12:07 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-05 12:07 UTC -
web:securitricks.com
CVE CVE-2026-47294 - Score : 8.0 - Source : secure@microsoft.com - Description : Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
2026-06-05 12:07 UTC -
web:securityvulnerability.io
What is CVE-2026-47294 ? A deserialization vulnerability in Microsoft Office SharePoint allows an authorized attacker to execute arbitrary code over a network. By exploiting this flaw, attackers can manipulate data and potentially gain unauthorized control over the system, making this an important security concern for organizations utilizing SharePoint.
2026-06-05 12:07 UTC -
web:www.5tattva.com
CVE-2026-47294 is an Important-severity SharePoint Server vulnerability caused by an OS command injection flaw. Although exploitation requires authentication and user interaction, a successful attack could lead to remote code execution and full server compromise, making timely patching essential for affected organizations.
2026-06-05 12:07 UTC -
web:www.cisecurity.org
<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...
2026-06-05 12:07 UTC -
web:www.thehackerwire.com
CVE-2026-47294 is a High severity vulnerability (CVSS 8). Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
2026-06-05 12:07 UTC -
web:blogs.oracle.com
For more information about the Critical Security Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.
2026-06-19 02:32 UTC -
web:blog.talosintelligence.com
Microsoft Patch Tuesday details for June 2026 . Microsoft has released its monthly security update for June 2026 , which includes 206 vulnerabilities affecting a range of products, including 32 that Microsoft marked as "critical". Out of 32 "critical" entries, 28 are remote code execution (RCE) vulnerabilities in Microsoft Windows services and applications including Windows Active Directory ...
2026-06-19 02:32 UTC -
web:msrc.microsoft.com
Security Update Guide - Microsoft Security Response Center
2026-06-19 02:32 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-06-19 02:32 UTC -
web:support.sap.com
SAP security Patch Day Bulletin
2026-06-19 02:32 UTC -
web:www.malwarebytes.com
Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.
2026-06-19 02:32 UTC -
web:www.oracle.com
This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.
2026-06-19 02:32 UTC -
web:www.rapid7.com
Microsoft is publishing 200 vulnerabilities on June 2026 Patch Tuesday, including an HTTP/2 denial of service vulnerability and an elevation of privilege vulnerability in PowerToys.
2026-06-19 02:32 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-06-19 02:32 UTC
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