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CVE-2019-0541: Microsoft MSHTML Remote Code Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2019-0541
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft MSHTML engine contains an improper input validation vulnerability that allows for remote code execution vulnerability.

CSIRTS triage

vendor: Microsoftproduct: MSHTMLRemote code execution
What
An improper input validation vulnerability allows for remote code execution.
Who is affected
Users of Microsoft products utilizing the MSHTML engine.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security updates from Microsoft.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-0541

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2019-0541coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft MSHTML Remote

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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