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CVE-2019-1367: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

criticalknown exploitedpublic exploitCVE-2019-1367
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 Internet Explorer contains a memory corruption vulnerability in how the scripting engine handles objects in memory. Successful exploitation allows for remote code execution in the context of the current user.

CSIRTS triage

vendor: Microsoftproduct: Internet ExplorerMemory corruption
What
This vulnerability is a memory corruption issue in the scripting engine that allows for remote code execution.
Who is affected
Users of Microsoft Internet Explorer.
Urgency
Remediation is critical due to active exploitation and the severity of the vulnerability.
Action
Update Internet Explorer to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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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-2019-1367

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-2019-1367coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Internet Explorer

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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