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.
Published: 2026-10-08
Score: 7.1 High
EPSS: n/a
KEV: No
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Remediation

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History

Thu, 08 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()
First Time appeared Mit
Mit kerberos 5
Weaknesses CWE-476
CPEs cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
Vendors & Products Mit
Mit kerberos 5
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, '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'}

Subscriptions

Mit Kerberos 5
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-08T20:15:54.159Z

Reserved: 2026-10-08T20:02:23.913Z

Link: CVE-2026-107778

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses