CVE-2026-107778highCWE-476

CVE-2026-107778: high-severity vulnerability in MIT krb5

MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()

Published · Updated

Follow this CVE+ Monitor krb5+ Monitor krb5

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.1epss 0.4%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
MIT · krb5
Related CVEs — MIT krb5

In the same product, most dangerous first.

CVE-2019-14844HIGHCVE-2019-14844EPSS 4.4%CVE-2017-7562MEDIUMCVE-2017-7562EPSS 3.2%CVE-2026-107708MEDIUMMIT krb5 through 1.22.2 KDC NULL Pointer Dereference via S4U2Proxy PACEPSS 0.5%