Heap-based Buffer Overflow Affecting 389ds/389-ds-base package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published17 Jun 2026
- disclosed4 Jun 2026
- creditUnknown
Introduced: 4 Jun 2026
CVE-2026-11884 (opens in a new tab)How to fix?
There is no fixed version for 389ds/389-ds-base.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the read_schema_dse and schema_oc_to_string functions when the length of the oc_superior field is not included in buffer size calculations but is still written to the buffer. An attacker can cause a server crash and potentially impact integrity and availability by creating objectclasses with excessively long SUP values through Directory Manager privileges or a compromised replication supplier.
Workaround
This vulnerability can be mitigated by restricting Directory Manager access, auditing replication agreements, monitoring cn=schema modifications for unusually long SUP values, and restricting LDAP replication traffic to trusted networks.
Note:
This issue is due to the incomplete fix of CVE-2025-14905.