CVE-1999-0725: Microsoft Internet Information Server

High severity, CVSS 7.1. EPSS: 24.9% chance of exploitation in the next 30 days.

When IIS is run with a default language of Chinese, Korean, or Japanese, it allows a remote attacker to view the source code of certain files, a.k.a. "Double Byte Code Page".

Affected products

• Microsoft Internet Information Server: version 3.0 only; version 4.0 only

Published 1999-08-19. Last modified 2026-06-16.