Memory Corruption in Microsoft Internet Explorer Scripting Engine (CVE‑2018‑8653) Enables Remote Code Execution
What It Is — Microsoft Internet Explorer’s scripting engine mishandles objects in memory, creating a memory‑corruption condition that can be exploited for remote code execution. The flaw is tracked as CVE‑2018‑8653 and appears in the CISA Known Exploited Vulnerabilities catalog.
Exploitability — Publicly disclosed; proof‑of‑concept code exists and the vulnerability is actively exploited in the wild. CVSS v3.1 base score 7.8 (High).
Affected Products — Microsoft Internet Explorer 11 on Windows 7, 8.1, and 10 (all supported versions that still include the legacy IE component).
Why It Matters for Trust & Control Assurance
- Tests the control objective of timely vulnerability remediation and patch management, a cornerstone of audit‑ready security programs.
- Demonstrates the need for continuous evidence that known flaws are patched across the asset base, supporting defensible audit trails.
- Highlights the importance of maintaining an up‑to‑date software inventory to satisfy multiple frameworks (NIST CSF, ISO 27001, etc.) with a single control.
Recommended Actions
- Deploy Microsoft’s security update that resolves CVE‑2018‑8653.
- If patching is not feasible, disable or block Internet Explorer via Group Policy or endpoint controls.
- Refresh your asset inventory to capture IE version and patch status.
- Record remediation steps in your Trust Center to provide audit‑ready evidence of compliance.
Source: CISA KEV – CVE‑2018‑8653