{"action":"Upgrade krb5 to 1.20.1-2+deb12u5 or later.","affected":[{"fixed":"1.20.1-2+deb12u5","introduced":"0"}],"component":"krb5","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1.20.1-2+deb12u5"],"id":"tcs_01M5NRXT79AGAZ6R2S4JZBS8TW","modified_at":"2026-10-27T09:47:30.155790090Z","published_at":"2026-04-28T07:16:03.197Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40356","https://security-tracker.debian.org/tracker/CVE-2026-40356"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40356","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40356"}],"summary":"In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism register"}