CVE-2026-18453
CVE-2026-18453 · 389-ds-base: 389-ds-base: pre-authentication null pointer dereference via paged results and use_one_backend control in op_shared_search
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of op_shared_search allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USE_ONE_BACKEND control, resulting in denial of service.
CVSS 7.5 · High · EPSS 0.8%
- Published
- Updated
Stack: system
Affected products and versions
red hat directory server 11.5 e4s for rhel 8
- Versions
- ≥ 8060020260908152739.0ca98e7e: Not affected (rpm)
No fix published
red hat directory server 11.7 e4s for rhel 8
- Versions
- ≥ 8080020260903102346.f969626e: Not affected (rpm)
No fix published
red hat directory server 11.9 for rhel 8
- Versions
- ≥ 8100020260904171440.37ed7c03: Not affected (rpm)
No fix published
red hat directory server 12.2 e4s for rhel 9
- Versions
- ≥ 9020020260903155914.1674d574: Not affected (rpm)
No fix published
red hat directory server 12.4 e4s for rhel 9
- Versions
- ≥ 9040020260903102623.1674d574: Not affected (rpm)
No fix published
red hat enterprise linux 10
- Versions
- ≥ 0:3.2.0-10.el10_2: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
- Versions
- ≥ 0:3.0.6-21.el10_0: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
- Versions
- ≥ 0:1.3.11.1-15.el7_9: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 8100020260904155442.25e700aa: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 8040020260901171549.96015a92: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 8040020260901171549.96015a92: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 8060020260901145727.824efc52: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 8060020260901145727.824efc52: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 8080020260831180218.6dbb3803: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 8080020260831180218.6dbb3803: Not affected (rpm)
No fix published
red hat enterprise linux 9
- Versions
- ≥ 0:2.8.0-10.el9_8: Not affected (rpm)
No fix published
red hat enterprise linux 9.2 update services for sap solutions
- Versions
- ≥ 0:2.2.4-22.el9_2: Not affected (rpm)
No fix published
red hat enterprise linux 9.4 update services for sap solutions
- Versions
- ≥ 0:2.4.5-29.el9_4: Not affected (rpm)
No fix published
red hat enterprise linux 9.6 extended update support
- Versions
- ≥ 0:2.6.1-24.el9_6: Not affected (rpm)
No fix published
red hat directory server 13.2
- Versions
- ≥ 1788851765: Not affected (rpm)
No fix published
red hat directory server 12
No fix published
red hat directory server 13
No fix published
red hat enterprise linux 6
No fix published
389-ds-base Debian:12
- Versions
- 2.3.1+dfsg1-1
- 2.3.1+dfsg1-1+deb12u1
- 2.3.4+dfsg1-1
- 2.3.4+dfsg1-1.1
- 2.4.4+dfsg1-1
- 2.4.4+dfsg1-3
- 2.4.5+dfsg1-1
- 3.0.2+dfsg1-1
- 3.1.1+dfsg1-1
- 3.1.1+dfsg1-2
- 3.1.1+dfsg1-3
- 3.1.2+dfsg1-1
- 3.1.2+vendor1-1
- 3.1.2+vendor1-2
- 3.3.0-1
- 3.3.0-2
- 3.3.1-1
- 3.3.1-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://access.redhat.com/errata/RHSA-2026:64771
- https://access.redhat.com/errata/RHSA-2026:64776
- https://access.redhat.com/errata/RHSA-2026:64778
- https://access.redhat.com/errata/RHSA-2026:64779
- https://access.redhat.com/errata/RHSA-2026:64780
- https://access.redhat.com/errata/RHSA-2026:64781
- https://access.redhat.com/errata/RHSA-2026:64783
- https://access.redhat.com/errata/RHSA-2026:64784
- https://access.redhat.com/errata/RHSA-2026:64785
- https://access.redhat.com/errata/RHSA-2026:64789
- https://access.redhat.com/errata/RHSA-2026:64790
- https://access.redhat.com/errata/RHSA-2026:64791
- https://access.redhat.com/errata/RHSA-2026:64792
- https://access.redhat.com/errata/RHSA-2026:64793
- https://access.redhat.com/errata/RHSA-2026:64804
- https://access.redhat.com/errata/RHSA-2026:65119
- https://access.redhat.com/errata/RHSA-2026:79217
- https://access.redhat.com/security/cve/CVE-2026-18453
- https://bugzilla.redhat.com/show_bug.cgi?id=2509696
- https://nvd.nist.gov/vuln/detail/CVE-2026-18453