Buffer overflow in Red Hat Directory Server 11
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…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (20.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (Permissions Required)
Frequently asked questions
- What is CVE-2026-11793?
- CVE-2026-11793 is a medium-severity vulnerability in Red Hat Directory Server 11, classified under Stack-based Buffer Overflow. CVSS score: 4.9/10. Published 2026-06-09.
- How severe is CVE-2026-11793?
- Medium severity. CVSS v3 base score is 4.9 out of 10.