MinorCritical vulnerability
CVE-2026-112320 (CVSS 7.5)
NVD · officialPublished Nov 9, 2026Risk 23/100
The GSS-RPC transport layer in MIT Kerberos 5 (aka krb5) 1.4 and later does not release the previous authentication context when a client switches from an RPCSEC_GSS or AUTH_GSSAPI flavor to a non-GSS flavor on the same TCP connection. This allows remote attackers to cause a denial of service (memory exhaustion in kadmind) by repeatedly establishing and abandoning GSS authentication contexts.
Technical details
CVSS
7.5
AV:NetworkAC:LowPR:NoneUI:NoneC:NoneI:NoneA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
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