CVE-2026-107778

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/krb5/krb5
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/commit/48afa9abb89ab2176bb20624d87d010b9984fc08
https://github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282a
https://github.com/krb5/krb5/pull/1511
https://www.vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-krb5-rd-cred

Configurations

No configuration.

History

08 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 21:17

Updated : 2026-10-09 12:17

NVD link : CVE-2026-107778

Mitre link : CVE-2026-107778

CVE.ORG link : CVE-2026-107778

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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