CVE-2026-0915: GNU Glibc

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.

Affected products

• GNU Glibc: from 2.0, up to and including 2.42

Published 2026-01-15. Last modified 2026-06-17.