Out-of-bounds Read in Red Hat Directory Server 11
CVE-2026-11786
A flaw was found in 389 Directory Server. The LDIF parser reads past the end of a heap buffer when processing attribute types with trailing semicolons during database import, causing an out-of-bounds read detectable under memory instrumentation.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 1.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-11786 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
- redhat.atlassian.net/browse/PSIRTSUPT-7600 (Permissions Required)
Frequently asked questions
- What is CVE-2026-11786?
- CVE-2026-11786 is a low-severity vulnerability in Red Hat Directory Server 11, classified under Out-of-bounds Read. CVSS score: 1.9/10. Published 2026-06-09.
- How severe is CVE-2026-11786?
- Low severity. CVSS v3 base score is 1.9 out of 10.