VULNERABILITY INTELLIGENCE

CVE-2026-11793

CVSS score4.9 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2026-06-09
Last modified2026-08-07
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-121

Primary references