CVE-2018-1000221: Pkgconf

Critical severity, CVSS 9.8. EPSS: 1.4% chance of exploitation in the next 30 days.

pkgconf version 1.5.0 to 1.5.2 contains a Buffer Overflow vulnerability in dequote() that can result in dequote() function returns 1-byte allocation if initial length is 0, leading to buffer overflow. This attack appear to be exploitable via specially crafted .pc file. This vulnerability appears to have been fixed in 1.5.3.

Affected products

• Pkgconf Pkgconf: from 1.5.0, up to and including 1.5.2

Published 2018-08-20. Last modified 2026-06-17.