CVE-2026-11884
Medium · 6.5CVSS
6.5
EPSS
0.3%
Published
Jun 10, 2026
CISA due date
—
The record
A heap buffer overflow flaw was found in 389 Directory Server. When serializing objectclass definitions, the oc_superior (SUP) field length is omitted from buffer size calculations in read_schema_dse() and schema_oc_to_string(), but the field is still written via strcat(). An attacker with Directory Manager privileges, or a compromised replication supplier, can trigger a server crash by creating objectclasses with long SUP values. This is an incomplete fix variant of CVE-2025-14905.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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