Red HatCVE-2026-16560
Red Hat Directory Server 11: denial of service
Medium5.3CVE-2026-16560 · Published Jul 22, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Directory Server 11 Product | all versions | No fix yet |
| Red Hat Directory Server 12 Product | all versions | No fix yet |
| Red Hat Directory Server 13 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 10 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 6 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 7 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 8 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 9 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-1220
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 22 | Red Hat librest: attacker could bypass PKCE protections | Medium6.8 | No fix yet |
| Jul 22 | Red Hat Ansible Automation Platform 2: command injection | High7.8 | No fix yet |
| Jul 22 | Red Hat Ansible Automation Platform 2: path traversal | Medium6.6 | No fix yet |
| Jul 22 | Red Hat Ansible Automation Platform 2: information disclosure | Low3.3 | No fix yet |
| Jul 22 | Red Hat Ansible Automation Platform 2: command injection | High7.8 | No fix yet |
| Jul 22 | Red Hat Ansible Automation Platform 2: command injection | High7.8 | No fix yet |