{"affected":[{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"krb5","product":"Red Hat Enterprise Linux 10","source":"CNA: redhat","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:1.21.3-11.el10_3.2","versionType":"rpm"}]},{"defaultStatus":"unknown","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"krb5","product":"Red Hat Enterprise Linux 6","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"krb5","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"krb5","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"krb5","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"krb5","product":"Red Hat Hardened Images","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-112320","cwes":["CWE-772"],"description":"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.","epss":{"date":"2026-11-10","percentile":0.54618,"score":0.00731},"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":7.5,"severity":"high","source":"NVD: secalert@redhat.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794488223261,"publishedAt":1794251287434,"references":[{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:99624"},{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-112320"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478449"},{"source":"secalert@redhat.com","tags":[],"url":"https://access.redhat.com/security/cve/CVE-2026-112320"},{"source":"secalert@redhat.com","tags":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478449"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"Restrict network access to kadmind to trusted hosts, or disable it in favor of kadmin.local server-side command line tool for administration operations if possible."}],"revision":"4c726a1072289c08211455d024ee09bf09bdab98cc10fdf6377476fe93dd1282","sources":[{"modifiedAt":1794488223261,"name":"CNA: redhat","retrievedAt":1794488908595,"url":"https://www.cve.org/CVERecord?id=CVE-2026-112320"},{"modifiedAt":1794251801017,"name":"NVD","retrievedAt":1794269955591,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112320"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794376992188,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112320"}],"ssvc":null,"status":"published","title":"Krb5: mit krb5 kadmind unauthenticated memory leak dos via gss-rpc auth flavor switching","updatedAt":1794488908595}