What is CVE-2026-112320?

CVE-2026-112320 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2026-11-09.

How severe is CVE-2026-112320?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Red Hat Enterprise Linux 10

CVE-2026-112320

The GSS-RPC transport layer in MIT Kerberos 5 (aka krb5) 1.4 and later does not release the previous authentication context when a client switches from an RPCSEC_GSS or AUTH_GSSAPI flavor to a non-GSS flavor on the same TCP connection. This allows remote attackers to cause a denial of service (memory exhaustion in kadmind) by repeatedly establishing and abandoning GSS authentication contexts.

Published 2026-11-09 · last modified 2026-11-09.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

access.redhat.com/security/cve/CVE-2026-112320 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-112320?: CVE-2026-112320 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2026-11-09.
How severe is CVE-2026-112320?: High severity. CVSS v3 base score is 7.5 out of 10.