CVE-2010-4052: GNU Glibc

Medium severity, CVSS 5.0. EPSS: 51.3% chance of exploitation in the next 30 days.

Stack consumption vulnerability in the regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (resource exhaustion) via a regular expression containing adjacent repetition operators, as demonstrated by a {10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD.

Affected products

• GNU Glibc: version 1.00 only; version 1.01 only; version 1.02 only; version 1.03 only; version 1.04 only; version 1.05 only; …

Published 2011-01-13. Last modified 2026-06-16.