Question 1

What is the EOL Risk Score for Internet Explorer 11 LTSB?

Accepted Answer

Internet Explorer 11 LTSB has an EOL Risk Score™ of 40 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (0/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (10/10).

Question 2

Is Internet Explorer 11 LTSB still supported?

Accepted Answer

Internet Explorer 11 LTSB is currently supported. End of life is scheduled for October 14, 2031. Plan your migration before that date to avoid security risk.

Question 3

When does Internet Explorer 11 LTSB reach end of life?

Accepted Answer

Internet Explorer 11 LTSB reached (or will reach) end of life on October 14, 2031. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Internet Explorer 11 LTSB after end of life?

Accepted Answer

After end of life, the vendor's standard support for Internet Explorer 11 LTSB ends, so newly discovered vulnerabilities may never be fixed unless a paid extended support option covers that version. Auditors ask about it too: PCI DSS requirement 12.3.4, for example, calls for a yearly review of vendor end-of-life announcements with a remediation plan approved by senior management.