{"action":"Upgrade krb5 to 1.8.3+dfsg-3 or later.","affected":[{"fixed":"1.8.3+dfsg-3","introduced":"0"}],"component":"krb5","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1.8.3+dfsg-3"],"id":"tcs_01M5N9MWK2AJS2080YG35P3C3A","modified_at":"2026-10-23T18:03:42.974073790Z","published_at":"2010-12-02T16:22:21.207Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2010-4020","https://security-tracker.debian.org/tracker/CVE-2010-4020"],"severity":{"label":"medium","score":6.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2010-4020","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2010-4020"}],"summary":"MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, an"}