Remote Code Execution in Microsoft Internet Explorer (CVE‑2016‑0189) Threatens Enterprise Browsing
What It Is – The JScript and VBScript engines in Microsoft Internet Explorer contain a memory‑corruption flaw that can be triggered by a crafted web page. Successful exploitation allows an attacker to execute arbitrary code on the victim system or cause a denial‑of‑service condition.
Exploitability – Publicly disclosed in 2016; proof‑of‑concept exploits have been observed in the wild. The CVSS v3.1 base score is 7.5 (High), indicating a high likelihood of remote exploitation without user interaction beyond visiting a malicious site.
Affected Products – Microsoft Internet Explorer (all supported versions at the time) and any other Microsoft product that embeds the IE rendering engine (e.g., certain Windows components).
Why It Matters for Trust & Control Assurance
- Demonstrates the need for continuous vulnerability‑management controls that generate auditable evidence of patching and mitigation.
- Highlights the importance of secure configuration baselines for browsers, a control area that maps to multiple frameworks (e.g., NIST CSF Identify and Protect, ISO 27001 A.12).
- Provides a concrete test case for the Control Mapping capability: organizations can capture remediation evidence in a Trust Center to prove due‑diligence during audits or third‑party assessments.
Recommended Actions
- Verify that the latest security updates for Internet Explorer are deployed across all endpoints.
- If IE is not required, disable or uninstall the browser and enforce the use of a hardened, supported alternative.
- Update your vulnerability‑management process to capture patch‑deployment evidence and map remediation to the relevant control objectives.
- Document the remediation steps in your audit‑ready repository (e.g., Verisq Trust Center) to demonstrate continuous control assurance.
Source: CISA KEV – CVE‑2016‑0189