CVE-2026-32201

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.434 · 99 %ileexploit · PoCDEEUNLRUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · PoC

Likely / severe?

43.4% (99th) EPSS

CVSS 6.5 · medium

Is it mine?

56 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2026-04-14remediate by 2026-04-28

required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-24

Microsoft SharePoint Server Improper Input Validation Vulnerability

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMicrosoft SharePoint Enterprise Server 2016msrc_csaf
16.0.5548.1003:Security Update:https://support.microsoft.com/help/5002861
https://support.microsoft.com/help/5002861
FixedMicrosoft SharePoint Server 2019msrc_csaf
16.0.10417.20114:Security Update:https://support.microsoft.com/help/5002854
https://support.microsoft.com/help/5002854
FixedMicrosoft SharePoint Server Subscription Editionmsrc_csaf
16.0.19725.20210:Security Update:https://support.microsoft.com/help/5002853
https://support.microsoft.com/help/5002853

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.5

v3.16.5mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:Csecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · secure@microsoft.com USexploitability 3.9 · impact 2.5

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:Hsecondary · CVSS-BT (t0sche)

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:Csecondary · NCSC-NL NL

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20USCWE-918US

exploits (1)

Public proof-of-concept and weaponised exploit code.

B1tBit/CVE-2026-32201-exploitA spoofing vulnerability exists in Microsoft SharePoint Server due to improper input validation. An unauthenticated attacker can send a specially crafted HTTP request to inject malicious JavaScript (reflected XSS), which executes in the security context of the SharePoint site.PoC · poc_in_github

affected products (56)

Products and version ranges known to be affected.

Microsoft 365 Appsall versionscert_bundDEcpe:/a:microsoft:365_apps:-
Microsoft Excel 2016all versionscert_bundDEcpe:/a:microsoft:excel:2016
Microsoft Office 2016all versionscert_bundDEcpe:/a:microsoft:office:2016
Microsoft Office 2019all versionscert_bundDEcpe:/a:microsoft:office:2019
Microsoft Office LTSC 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_2021
Microsoft Office LTSC 2024all versionscert_bundDEcpe:/a:microsoft:office:ltsc_2024
Microsoft Office LTSC for Mac 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_for_mac_2021
Microsoft Office LTSC for Mac 2024all versionscert_bundDEcpe:/a:microsoft:office:ltsc_for_mac_2024
Microsoft Office Online Serverall versionscert_bundDEcpe:/a:microsoft:office_online_server:-
Microsoft PowerPoint 2016all versionscert_bundDEcpe:/a:microsoft:powerpoint:2016
Microsoft SharePoint Enterprise Server 2016all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2016
Microsoft SharePoint Server 2019all versionscert_bundDEcpe:/a:microsoft:sharepoint_server_2019:-
Microsoft SharePoint Server Subscription Editionall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition
Microsoft Microsoft SharePoint Enterprise Server 201616.0.0 → 16.0.5548.1003enisa_euvdEU
Microsoft Microsoft SharePoint Server 201916.0.0 → 16.0.10417.20114enisa_euvdEU
Microsoft Microsoft SharePoint Server Subscription Edition16.0.0 → 16.0.19725.20210enisa_euvdEU
Microsoft Corp Microsoft SharePoint Enterprise Server 2016≤ 16.0.5548.1003fstec_bduRU
Microsoft Corp Microsoft SharePoint Server Subscription Edition≤ 16.0.19725.20210fstec_bduRU
Microsoft Corp Windows Server 2019≤ 16.0.10417.20114fstec_bduRU
Microsoft Microsoft SharePoint Enterprise Server 2016all versionsfixedmsrc_csafUS

showing 20 of 56

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0116Kwetsbaarheden verholpen in Microsoft OfficeNL2026-04-14csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Office producten.
WID-SEC-W-2026-1102Microsoft Office: Mehrere SchwachstellenDeutsch2026-04-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Excel, Microsoft PowerPoint, Microsoft Office, Microsoft Office Online Server, Microsoft SharePoint, Microsoft SharePoint Server 2019 und Microsoft 365 Apps ausnutzen, um beliebigen Programmcode auszuführen, Spoofing-Angriffe durchzuführen, Daten zu manipulieren und vertrauliche Informationen offenzulegen.
msrc_CVE-2026-32201Microsoft SharePoint Server Spoofing Vulnerability2026-04-14csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf ncsc_nl NVD CVE.org MITRE

published 2026-04-14modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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