CVE-2019-0541

KEVMicrosoft MSHTML Remote Code Execution Vulnerability

Description

Microsoft MSHTML engine contains an improper input validation vulnerability that allows for remote code execution vulnerability.

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 3.1 vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

PublishedJan 8, 2019

Last modifiedJun 17, 2026

Added to KEVNov 3, 2021

Remediation dueMay 3, 2022

References

securityfocus.com/bid/106402Broken LinkThird Party Advisory
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0541PatchVendor Advisory
exploit-db.com/exploits/46536/ExploitThird Party Advisory
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0541US Government Resource

0 recent articles mention this CVE

Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 1638 days
CVSS: 8.8 HIGH
EPSS (30-day exploit probability): 53.2% · top 1% of all CVEs
Weakness: CWE-77
Attack vector: Network, remotely reachable

Recommended actions

1.Apply updates per vendor instructions.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.