{"id":"CVE-2026-122054","title":"BIG-HKSCS decoding hang on crafted input","summary":"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 t…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-835"],"vendor":"The GNU C Library","product":"glibc","affected":["glibc >= 2.18 <= 2.31"],"published":"2026-11-04","updated":"2026-11-04","sourceUpdated":"2026-11-04T19:04:35.774Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-122054","references":[{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=25734"},{"url":"https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0026"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T21:36:00.518Z","epss":0.00446,"epssPercentile":0.39051,"slug":"CVE-2026-122054","body":"## Overview\n\nConverting 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.\n\n## Affected\n\n- `glibc >= 2.18 <= 2.31`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}