CVE-2026-16560
389-ds-base: 389-ds-base: heap-buffer-overflow in rdn_av_swap on quoted multivalued rdn
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 22, 2026
- Updated
- Jul 22, 2026
- Reserved
- Jul 22, 2026
Description
A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | redhat |
Weaknesses
- CWE-1220 Insufficient Granularity of Access Control
Affected Products
| Product | Versions |
|---|---|
Red Hat Directory Server 11Red Hat | |
Red Hat Directory Server 12Red Hat | |
Red Hat Directory Server 13Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-16560vdb-entry
- RHBZ#2506102issue-tracking
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