{"id":"CVE-2026-107778","revision":"625e767b350040309e891563cbb77d65","records":[{"revision":"625e767b350040309e891563cbb77d65","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107778","aliases":[],"title":"MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()","description":"MIT Kerberos 5 (krb5) through 1.22.2 contains a NULL pointer dereference in make_cred_list() in rd_cred.c that allows authenticated Kerberos clients to crash services by sending mismatched KRB-CRED arrays. Attackers can send forwarded credentials with more tickets than ticket_info entries through gss_accept_sec_context() to crash GSS-API acceptor services, causing denial of service.","state":0,"publishedAt":"2026-10-08T20:15:54.159+00:00","modifiedAt":"2026-10-09T11:50:03.488+00:00","affected":[{"ecosystem":"https://github.com/krb5/krb5","name":"krb5","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"MIT\",\n                    \"product\": \"krb5\",\n                    \"collectionURL\": \"https://github.com/krb5/krb5\",\n                    \"packageURL\": \"pkg:github/krb5/krb5\",\n                    \"repo\": \"https://github.com/krb5/krb5\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"1.22.2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/krb5/krb5/pull/1511","https://github.com/krb5/krb5/commit/48afa9abb89ab2176bb20624d87d010b9984fc08","https://github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282a","https://github.com/krb5/krb5/blob/krb5-1.22.2-final/src/lib/krb5/krb/rd_cred.c#L77-L112","https://github.com/krb5/krb5","https://www.vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-krb5-rd-cred"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107778","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107778","identifiers":["CVE-2026-107778"]},"retained":false,"historicalAffected":[]}],"coverage":[]}