CVE-2026-18453
HIGHCVSS 7.5Description
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.
Timeline
Published:September 7th, 2026 3:17 PM
Last modified:September 8th, 2026 5:16 AM
CVSS Scoring
CVSS v3: 7.5 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- 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-2026:64781
- https://access.redhat.com/errata/RHSA-2026:64783
- https://access.redhat.com/errata/RHSA-2026:64789
- https://access.redhat.com/errata/RHSA-2026:64792
- https://access.redhat.com/errata/RHSA-2026:64804
- https://access.redhat.com/security/cve/CVE-2026-18453
- https://bugzilla.redhat.com/show_bug.cgi?id=2509696
Source: NIST NVD · Data may lag official sources by up to one minute