Internet Explorer 9 End of Life Date
Internet Explorer 9 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
Internet Explorer 9 was released on March 15, 2011 and support ended on January 12, 2016 — a supported lifespan of 4 years and 10 months, shorter than the 17 years median for Internet Explorer releases. It has been without security patches for 10 years and 9 months.
What does Internet Explorer 9 end of life mean?
When Internet Explorer 9 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Internet Explorer 9 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Internet Explorer 11 LTSB or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.