CVE-2014-7817: Canonical Ubuntu Linux

Medium severity, CVSS 4.6. EPSS: 0.6% chance of exploitation in the next 30 days.

The wordexp function in GNU C Library (aka glibc) 2.21 does not enforce the WRDE_NOCMD flag, which allows context-dependent attackers to execute arbitrary commands, as demonstrated by input containing "$((`...`))".

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 12.04 only; version 14.04 only; version 14.10 only
• Debian Debian Linux: version 7.0 only
• GNU Glibc: version 2.21 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2014-11-24. Last modified 2026-06-17.