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CVE-2026-122054BIG-HKSCS decoding hang on crafted input
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.
5.9 MEDIUMEPSS 0.44%Not in KEVNVD: Received
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 5.9 | MEDIUM | 3.1glibc (CNA) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
Details
- CVE ID
- CVE-2026-122054
- Status
- Received
- Assigner (CNA)
- glibc
- Published
- Nov 4, 2026
- Last modified
- 2026-11-04 19:17 UTC
- Weaknesses
- CWE-835 · Loop with unreachable exit condition ('infinite loop')
Affected Products
As published by the CNA in the CVE record.
The GNU C Libraryglibc1 version range
- 2.18 through 2.31