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Vulnerability record · CVE-2026-11787 · published 9 June 2026

CVE-2026-11787: Redhat directory server vulnerability

Redhat · Directory Server

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 behavior.

6.3 CVSS 3.1 Medium EPSS 0.18% · top 93.5% CWE-126 · CWE-126
6.3CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
23 Jul 2026Last modified by NVD

Description

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 behavior.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-11787 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2485425 Issue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-11787), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.