CVE-2026-5450

CRITICAL

9.8

Description

Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/20/2026

Derniere modification4/23/2026

Sourcenvd

Observations honeypot0

Produits affectes

gnu:glibc

Faiblesses (CWE)

CWE-122CWE-787

References

https://inbox.sourceware.org/libc-announce/b11f0003-6ec1-4bd6-b9de-9e38a4efeca3@redhat.com/T/#u(3ff69d7a-14f2-4f67-a097-88dee7810d18)

https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450(3ff69d7a-14f2-4f67-a097-88dee7810d18)

https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

This product uses data from the NVD API but is not endorsed or certified by the NVD.