CVE-2007-4743: The original patch for CVE-2007-3999 in svc_auth_gss.c in the RPCSEC_GSS RPC library in MIT Kerberos 5 (krb...

Security readout for executives and security teams

CVE-2007-4743 is a flaw in MIT Kerberos 5 where a prior security patch did not fully prevent a buffer length problem. A remote attacker might trigger a buffer overflow in affected Kerberos-related services, including kadmind, on some platforms. The source bundle does not provide CVSS, confirmed exploitation, or complete affected package data. Exposure is most likely on legacy systems running MIT Kerberos 5 versions 1.4 through 1.6.2, especially Kerberos administration daemons or applications using the krb5 RPCSEC_GSS library. Modern supported distributions are unlikely to remain exposed unless they carry old, unpatched krb5 packages. Treat this as a legacy infrastructure hygiene issue unless old Kerberos servers are still present. If kadmind or Kerberos-dependent RPC services remain exposed, prioritize verification and vendor updates because authentication infrastructure compromise can have broad operational impact. Mitigation focus: Apply relevant vendor krb5 security updates from platform advisories.; Prioritize Kerberos administration servers and RPCSEC_GSS-dependent services.; If updates are unavailable, check vendor guidance for supported compensating controls..

Prepared

Jun 29, 2026, 03:38 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.