What is CVE-2026-11850?

CVE-2026-11850 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Integer Underflow. CVSS score: 5.0/10. Published 2026-06-11.

How severe is CVE-2026-11850?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Integer overflow in Red Hat Enterprise Linux 10

CVE-2026-11850

An integer underflow vulnerability was found in MIT krb5 in the berval2tl_data() function in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c. The function performs an unsigned subtraction (bv_len - 2) without a prior bounds check. When bv_l…

EPSS: 0.003 (17.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
RHBZ#2459970 (x_refsource_REDHAT, issue-tracking)
RHSA-2026:25520 (x_refsource_REDHAT, vendor-advisory)

Frequently asked questions

What is CVE-2026-11850?: CVE-2026-11850 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Integer Underflow. CVSS score: 5.0/10. Published 2026-06-11.
How severe is CVE-2026-11850?: Medium severity. CVSS v3 base score is 5.0 out of 10.