{"id":"JLSEC-2026-1258","summary":"In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application...","details":"In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls `gss_accept_sec_context()` on a system with a NegoEx mechanism registered in `/etc/gss/mech`. An unauthenticated remote attacker can trigger this, causing the process to terminate in `parse_nego_message`.","modified":"2026-08-12T14:59:06.430485287Z","published":"2026-08-12T14:29:53.019Z","upstream":["CVE-2026-40355","EUVD-2026-25981","GHSA-8qgv-wm66-hrmc"],"database_specific":{"license":"CC-BY-4.0","sources":[{"modified":"2026-07-14T13:18:50.990Z","published":"2026-04-28T06:16:03.663Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-40355","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40355","database_specific":{"status":"Modified"},"id":"CVE-2026-40355","imported":"2026-08-12T12:42:57.100Z"},{"imported":"2026-08-12T12:43:00.346Z","modified":"2026-07-14T15:33:00Z","published":"2026-04-28T06:30:29Z","url":"https://api.github.com/advisories/GHSA-8qgv-wm66-hrmc","html_url":"https://github.com/advisories/GHSA-8qgv-wm66-hrmc","id":"GHSA-8qgv-wm66-hrmc"},{"html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25981","id":"EUVD-2026-25981","imported":"2026-08-12T12:42:58.454Z","modified":"2026-07-14T12:48:52Z","published":"2026-04-28T00:00:00Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-25981"}]},"references":[{"type":"WEB","url":"https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html"},{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"},{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html"},{"type":"WEB","url":"https://github.com/advisories/GHSA-8qgv-wm66-hrmc"},{"type":"WEB","url":"https://github.com/krb5/krb5/commit/2e75f0d9362fb979f5fc92829431a590a130929f"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40355"},{"type":"WEB","url":"https://web.mit.edu/kerberos/advisories"},{"type":"WEB","url":"https://web.mit.edu/kerberos/advisories/"}],"affected":[{"package":{"name":"Kerberos_krb5_jll","ecosystem":"Julia","purl":"pkg:julia/Kerberos_krb5_jll?uuid=b39eb1a6-c29a-53d7-8c32-632cd16f18da"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1258.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"NVD"}]}