CVE-2026-11793
MEDIUM
NVD
CVSS Score
4.9
Severity
MEDIUM
Published
Jun 09, 2026
Vendor
unknown
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.