CVE-2023-33131
highpriority · track · 12EPSS 0.057 · 93 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-26
Microsoft Outlook Remote Code Execution Vulnerability
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMicrosoft 365 Apps for Enterprise for 32-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft 365 Apps for Enterprise for 64-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office 2019 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office 2019 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC 2021 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC 2021 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Outlook 2013 (32-bit editions)msrc_csaf
15.0.5563.1000:Security Update:https://support.microsoft.com/help/5002382
https://support.microsoft.com/help/5002382 - FixedMicrosoft Outlook 2013 (64-bit editions)msrc_csaf
15.0.5563.1000:Security Update:https://support.microsoft.com/help/5002382
https://support.microsoft.com/help/5002382 - FixedMicrosoft Outlook 2013 RT Service Pack 1msrc_csaf
15.0.5563.1000:Security Update:https://support.microsoft.com/help/5002382
https://support.microsoft.com/help/5002382 - FixedMicrosoft Outlook 2016 (32-bit edition)msrc_csaf
16.0.5400.1000:Security Update:https://support.microsoft.com/help/5002387
https://support.microsoft.com/help/5002387 - FixedMicrosoft Outlook 2016 (64-bit edition)msrc_csaf
16.0.5400.1000:Security Update:https://support.microsoft.com/help/5002387
https://support.microsoft.com/help/5002387
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (55)
Products and version ranges known to be affected.
- Microsoft SharePoint Enterprise Server 2016all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2016
- Microsoft SharePoint Server Subscription Editionall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition
- Microsoft Microsoft 365 Apps for Enterprise16.0.1 → https://aka.ms/OfficeSecurityReleasesenisa_euvdEU
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-1443Microsoft Office: Mehrere SchwachstellenDeutsch2023-06-13csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Microsoft 365 Apps, Microsoft Excel, Microsoft Office, Microsoft OneNote, Microsoft Outlook und Microsoft SharePoint ausnutzen, um seine Privilegien zu erweitern, beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Daten zu manipulieren.
- msrc_CVE-2023-33131Microsoft Outlook Remote Code Execution Vulnerability2023-06-13csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33131cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2023-33131cnnvd
- https://packetstormsecurity.com/files/173361/Microsoft-365-MSO-2306-Build-16.0.16529.20100-Remote-Code-Execution.htmlcnnvd
- https://vigilance.fr/vulnerability/Microsoft-365-Apps-Office-vulnerabilities-of-June-2023-41483cnnvd
- https://www.exploit-db.com/exploits/51574cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33131enisa_euvd
- http://packetstormsecurity.com/files/173361/Microsoft-365-MSO-2306-Build-16.0.16529.20100-Remote-Code-Execution.htmlnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33131PatchVendor Advisorynvd
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