Description
ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.
Affected products
mit: kerberos 5; debian: debian linux; netapp: active iq unified manager; netapp: oncommand insight; netapp: oncommand workflow automation; netapp: snapcenter; oracle: mysql server
References10
- github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944… PatchThird Party Advisory
- www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
- github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944… PatchThird Party Advisory
- www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
- github.com/krb5/krb5/releases Release NotesThird Party Advisory
- security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory
- security.netapp.com/advisory/ntap-20211104-0007/ Third Party Advisory
- web.mit.edu/kerberos/advisories/ Not Applicable
- www.debian.org/security/2021/dsa-4944 Third Party Advisory
- github.com/krb5/krb5/releases Release NotesThird Party Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 11% percentile: 96 · as of 7 November 2026
- CWE
- CWE-476
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