Vulnerability Details CVE-2026-11793
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 25.0%
CVSS Severity
CVSS v3 Score 4.9
References
Products affected by CVE-2026-11793
-
cpe:2.3:o:redhat:389_directory_server:-