CVE-2026-112318
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Remote Authenticated DoS in MIT Kerberos kadmind via NULL Policy Name
Vulnerability report for CVE-2026-112318, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-09
Last updated on: 2026-11-09
Assigner: redhat-SADP
Description
Description
The policy RPC stubs in kadmin/server/server_stubs.c in MIT Kerberos 5 (aka krb5) 1.5.3 and later do not reject a NULL policy name decoded by xdr_nullstring(), which allows remote authenticated users to cause a denial of service (kadmind crash via NULL pointer dereference) by sending a policy request with an empty policy name that reaches authorization checks or logging code.
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | * |
| Red Hat | Red Hat Enterprise Linux 7 | * |
| Red Hat | Red Hat Enterprise Linux 8 | * |
| Red Hat | Red Hat Enterprise Linux 9 | * |
| Red Hat | Red Hat Hardened Images | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
