{"id":"CVE-2026-5450","revision":"0dc07b8a951e474ca19ed0339b69b2bb","records":[{"revision":"0dc07b8a951e474ca19ed0339b69b2bb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-5450","aliases":[],"title":"scanf %mc off-by-one heap buffer overflow","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.","state":0,"publishedAt":"2026-04-20T20:55:41.17+00:00","modifiedAt":"2026-10-15T01:12:13.391+00:00","affected":[{"ecosystem":"Vendor product","name":"glibc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"The GNU C Library\",\n                    \"product\": \"glibc\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2.7\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[],"references":["https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450","https://inbox.sourceware.org/libc-announce/b11f0003-6ec1-4bd6-b9de-9e38a4efeca3@redhat.com/T/#u"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-5450","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-5450","identifiers":["CVE-2026-5450"]},"retained":false,"historicalAffected":[]}],"coverage":[]}