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CVE-2026-4046

iconv crash due to assertion failure with untrusted input

Published: 3/30/2026 Last updated: 4/20/2026 Reserved: 3/12/2026

The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application. This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.

CNA assigner: glibc (3ff69d7a-14f2-4f67-a097-88dee7810d18) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 7.5 High CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (1)

gettext-stub

Products affected (0)

No product listed.

References (3)

Credits (1)