PT-2026-33851 · Glibc+1 · Glibc+1

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CVE-2026-5450

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Published

2026-04-20

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Updated

2026-06-29

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions glibc versions 2.7 through 2.43
Description Calling the scanf family of functions using a %mc (malloc'd character match) with a format width specifier that has an explicit width greater than 1024 can lead to a one byte heap buffer overflow.
Recommendations Update glibc to a version later than 2.43.

Exploit

Fix

DoS

Memory Corruption

Heap Based Buffer Overflow

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Weakness Enumeration

Related Identifiers

ALSA-2026:33092
ALSA-2026:33126
ALSA-2026:33226
CVE-2026-5450
ECHO-56EB-505F-7A61
OESA-2026-2409
OESA-2026-2410
OESA-2026-2411
OESA-2026-2412
OESA-2026-2489
OPENSUSE-SU-2026:10770-1
OPENSUSE-SU-2026:20764-1
RHSA-2026:12740
RHSA-2026:33092
RHSA-2026:33126
RHSA-2026:33170
RHSA-2026:33226
RHSA-2026:33227
RHSA-2026:33228
RHSA-2026:33229
RHSA-2026:33230
RHSA-2026:33231
RHSA-2026:34211
RHSA-2026:36643
RHSA-2026:37395
RHSA-2026:37396
SUSE-SU-2026:21682-1
SUSE-SU-2026:21688-1
SUSE-SU-2026:21751-1
SUSE-SU-2026:21780-1
SUSE-SU-2026:21807-1
SUSE-SU-2026:2231-1
SUSE-SU-2026:2333-1
SUSE-SU-2026:2440-1

Affected Products

Rocky Linux
Glibc