CVE-2026-107778
MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()
MIT krb5
CVSS
7.1HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.42%Chance of exploitation activity in the next 30 days, higher than 35% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- krb5affected: all versions through 1.22.2CVE List
References 6
- github.com/krb5/krb5/pull/1511Fixvia CVE List
- github.com/krb5/krb5/commit/48afa9abb89ab2176bb20624d87d010b9984fc08Fixvia CVE List
- github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282aFixvia CVE List
- vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-krb5-rd-credAdvisoryvia CVE List
- github.com/krb5/krb5/blob/krb5-1.22.2-final/src/lib/krb5/krb/rd_cred.c#L77-L112Referencevia CVE List
- github.com/krb5/krb5Referencevia CVE List