CVE-2019-14871: Newlib Project Newlib

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

The REENT_CHECK macro (see newlib/libc/include/sys/reent.h) as used by REENT_CHECK_TM, REENT_CHECK_MISC, REENT_CHECK_MP and other newlib macros in versions prior to 3.3.0, does not check for memory allocation problems when the DEBUG flag is unset (as is the case in production firmware builds).

Affected products

• Newlib Project Newlib: before 3.3.0 (fixed in 3.3.0)

Published 2020-03-18. Last modified 2026-06-17.