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OpenAdvisories
Medium RHSA-2026:24686 1 CVE

Red Hat Security Advisory: krb5 security update

Published Jun 9, 2026 · Updated Oct 15, 2026

Ecosystem: Red Hat

Fixed packages 24

ReleasePackageFixed in
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-debugsource 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-devel 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-libs-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-pkinit-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-server-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-server-ldap-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream krb5-workstation-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream libkadm5-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-debugsource 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-libs 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-libs-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-pkinit 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-pkinit-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-server 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-server-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-server-ldap 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-server-ldap-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-workstation 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos krb5-workstation-debuginfo 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos libkadm5 0:1.21.1-2.el9_4.5
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::baseos libkadm5-debuginfo 0:1.21.1-2.el9_4.5

Vulnerabilities 1

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2463368
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_24686.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-40356
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-40356
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-40356
  • article
    https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html
  • article
    https://github.com/krb5/krb5/commit/2e75f0d9362fb979f5fc92829431a590a130929f
  • article
    https://web.mit.edu/kerberos/advisories/