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CVE-2018-8653: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

criticalknown exploitedCVE-2018-8653
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 due to how the Scripting Engine handles objects in memory, leading to remote code execution.

CSIRTS triage

vendor: Microsoftproduct: Internet ExplorerMemory corruptionRemote code execution
What
Internet Explorer has a memory corruption vulnerability that can lead to remote code execution.
Who is affected
Users of Microsoft Internet Explorer.
Urgency
Immediate action is required due to the critical severity and active exploitation.
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-2018-8653

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-2018-8653coverage & 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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