CVE-2026-122054

Medium

Description

Converting crafted BIG-HKSCS input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.18 through 2.31 may result in the converter making no progress, causing the calling application to hang.

SeverityMedium

CVSS5.9

Exploit probability—

ProductThe Gnu C Library Glibc

PublishedNov 4, 2026

First seenNov 4, 2026

Weakness typeCWE-835CWE-835

How to fix

Vendor advisories

sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0026

Affected products

Product	Affected versions	Fixed in
The GNU C Library glibc	2.18 ≤ v ≤ 2.31	—

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