Medium severity6.5NVD Advisory· Published Oct 8, 2026· Updated Oct 8, 2026
CVE-2026-107778
CVE-2026-107778
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.
Affected products
3- Range: <=1.22.2
- Range: <=1.22.2
Patches
Vulnerability mechanics
References
5- github.com/krb5/krb5/blob/krb5-1.22.2-final/src/lib/krb5/krb/rd_cred.cnvd
- github.com/krb5/krb5/commit/48afa9abb89ab2176bb20624d87d010b9984fc08nvd
- github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282anvd
- github.com/krb5/krb5/pull/1511nvd
- www.vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-krb5-rd-crednvd
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