CVE-2015-6138: Microsoft Internet Explorer

Medium severity, CVSS 4.3. EPSS: 12.1% chance of exploitation in the next 30 days.

Microsoft Internet Explorer 8 through 11 mishandles HTML attributes in HTTP responses, which allows remote attackers to bypass a cross-site scripting (XSS) protection mechanism via unspecified vectors, aka "Internet Explorer XSS Filter Bypass Vulnerability."

Affected products

• Microsoft Internet Explorer: version 8 only; version 9 only; version 10 only; version 11 only

Published 2015-12-09. Last modified 2026-06-17.