# RHSA-2026:64804: 389-ds-base security update

RHSA-2026:64804, released September 10, 2026, fixes 4 CVEs in 389-ds-base (version 3.0.6-21.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-64804
- Platform: Linux
- Released: Sep 10, 2026
- Priority: Urgent (Closes CVE-2026-18922, rated Critical)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:64804

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [389-ds-base](https://patchblox.com/security/data/product/linux/389-ds-base.md) | RHEL 10 | 3.0.6-21.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-18922](https://patchblox.com/security/data/cve/CVE-2026-18922.md) | Urgent | 389-ds: stale identity carried in a Cyrus SASL auxiliary property during SASL PLAIN authentication allows | 9.8 | 0.0056 |  |
| [CVE-2026-76560](https://patchblox.com/security/data/cve/CVE-2026-76560.md) | Urgent | 389-ds-base: Resolves: RHEL-245374 - 389-ds-base: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN [... | 9.8 | 0.0056 |  |
| [CVE-2026-18453](https://patchblox.com/security/data/cve/CVE-2026-18453.md) | High | 389-ds: pre-authentication NULL pointer dereference via paged results and | 9.8 | 0.0085 |  |
| [CVE-2026-18355](https://patchblox.com/security/data/cve/CVE-2026-18355.md) | High | 389-ds: heap buffer overflow in the SASL I/O layer allows a remote authenticated attacker to cause a denial of | 9.8 | 0.0084 |  |

---

Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.