High 8.8Known exploited (CISA KEV)Published Jan 8, 2019

CVE-2019-0541A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input, aka "MSHTML Engine Remote Code Execution Vulnerability." This affects Microsoft Office, Micr…

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

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It affects Microsoft Office and 7 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by May 3, 2022. Treat that date as your deadline.

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Every CVE for Microsoft Office

Exploited in the last 30 days

A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input, aka "MSHTML Engine Remote Code Execution Vulnerability." This affects Microsoft Office, Microsoft Office Word Viewer, Internet Explorer 9, Internet Explorer 11, Microsoft Excel Viewer, Internet Explorer 10, Office 365 ProPlus.

CVSS: 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-77
Known exploited: Added to CISA KEV Nov 3, 2021; federal remediation due May 3, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 53.20% (percentile 99)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Microsoft Microsoft Office microsoft:office (from the name)	2010 Service Pack 2 (32-bit editions); 2010 Service Pack 2 (64-bit editions); 2013 RT Service Pack 1; 2013 Service Pack 1 (32-bit editions); 2013 Service Pack 1 (64-bit editions); 2016 (32-bit edition); 2016 (64-bit edition); 2019 for 32-bit editions; and 1 more ranges	CNA record
Microsoft Microsoft Office Word Viewer microsoft:office_word_viewer (from the name)	Microsoft Office Word Viewer	CNA record
Microsoft Internet Explorer 9 microsoft:internet_explorer_9 (from the name)	Windows Server 2008 for 32-bit Systems Service Pack 2; Windows Server 2008 for x64-based Systems Service Pack 2	CNA record
Microsoft Internet Explorer 11 microsoft:internet_explorer_11 (from the name)	Windows 10 for 32-bit Systems; Windows 10 for x64-based Systems; Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; Windows 10 Version 1703 for 32-bit Systems; Windows 10 Version 1703 for x64-based Systems; Windows 10 Version 1709 for 32-bit Systems; Windows 10 Version 1709 for ARM64-based Systems; and 16 more ranges	CNA record
Microsoft Microsoft Excel Viewer microsoft:excel_viewer (from the name)	2007 Service Pack 3	CNA record
Microsoft Internet Explorer 10 microsoft:internet_explorer_10 (from the name)	Windows Server 2012	CNA record
microsoft internet_explorer microsoft:internet_explorer	11; 9; 10	NVD
microsoft excel_viewer microsoft:excel_viewer	2007	NVD
microsoft office microsoft:office	2010; 2013; 2013; 2016; 2019	NVD
microsoft office_365_proplus microsoft:office_365_proplus	all versions	NVD
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References

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0541	x-refsource-confirm, patch, vendor-advisory
https://www.exploit-db.com/exploits/46536/	exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
http://www.securityfocus.com/bid/106402	vdb-entry, x-refsource-bid, broken-link, third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0541	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.