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 ()
Does this affect you?
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.
Do this next
Free account, 1 product
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
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 |
microsoft office_word_viewer microsoft:office_word_viewer | all versions | NVD |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0541x-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/106402vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0541us-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.