CVE-2000-0824: GNU Glibc

High severity, CVSS 7.2. EPSS: 1.2% chance of exploitation in the next 30 days.

The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is provided twice to a program, which could allow local users to execute arbitrary commands in setuid programs by specifying their own duplicate environmental variables such as LD_PRELOAD or LD_LIBRARY_PATH.

Affected products

• GNU Glibc: version 2.1.1 only

Published 2000-11-14. Last modified 2026-06-16.