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.
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Affected Vendors & Products
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History
Wed, 10 Jun 2026 17:30:00 +0000
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ssvc
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Wed, 10 Jun 2026 14:45:00 +0000
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| Description | 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. | |
| Title | 389-ds-base: 389-ds-base: heap buffer overflow in schema objectclass serialization due to missing oc_superior in size calculation | |
| First Time appeared |
Redhat
Redhat directory Server Redhat enterprise Linux |
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| Weaknesses | CWE-122 | |
| CPEs | cpe:/a:redhat:directory_server:11 cpe:/a:redhat:directory_server:12 cpe:/a:redhat:directory_server:13 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat directory Server Redhat enterprise Linux |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-06-10T14:07:13.559Z
Updated: 2026-06-10T16:31:21.611Z
Reserved: 2026-06-10T13:55:27.884Z
Link: CVE-2026-11884
Updated: 2026-06-10T16:26:52.655Z
Status : Received
Published: 2026-06-10T15:16:32.317
Modified: 2026-06-10T15:16:32.317
Link: CVE-2026-11884
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