Vulnerability in Red Hat Directory Server 11
CVE-2026-11787
A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without bounds checking, causing a heap buffer over-read in string filter parsing that may influence internal filter processing…
EPSS: 0.002 (7.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (Permissions Required)
Frequently asked questions
- What is CVE-2026-11787?
- CVE-2026-11787 is a medium-severity vulnerability in Red Hat Directory Server 11, classified under Buffer Over-read. CVSS score: 5.0/10. Published 2026-06-09.
- How severe is CVE-2026-11787?
- Medium severity. CVSS v3 base score is 5.0 out of 10.