Security Advisory

CVE-2026-11793

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-09 13:11:40

Last updated 2026-06-30 10:32:56

Assigner redhat

CVSS score not scored

State PUBLISHED

Description

A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.

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