CVE-2026-11770: high-severity vulnerability in Red Hat Directory Server 11.5 E4S for RHEL 8
389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation. Because the handler performs the search against cn=config with elevated replication plugin privileges and returns a boolean match result, the attacker can extract sensitive server configuration metadata, including replication bind DNs and password storage scheme information.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Red Hat · Red Hat Directory Server 11.5 E4S for RHEL 8Red Hat · Red Hat Directory Server 11.7 E4S for RHEL 8Red Hat · Red Hat Directory Server 11.9 for RHEL 8Red Hat · Red Hat Directory Server 12Red Hat · Red Hat Directory Server 12.2 E4S for RHEL 9Red Hat · Red Hat Directory Server 12.4 E4S for RHEL 9Red Hat · Red Hat Directory Server 13Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.6 Extended Update SupportRelated CVEs — Red Hat Directory Server 11.5 E4S for RHEL 8
In the same product, most dangerous first.
CVE-2025-14905HIGH389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflowEPSS 1.3%CVE-2024-3657HIGH389-ds-base: potential denial of service via specially crafted kerberos as-req requestEPSS 1.3%CVE-2026-18453HIGH389-ds-base: 389-ds-base: pre-authentication null pointer dereference via paged results and use_one_backend control in op_shared_searchEPSS 0.8%CVE-2026-18355HIGH389-ds-base: 389-ds-base: heap buffer overflow via sasl wrapped-record length lower-bound underflow in sasl_io_start_packet()EPSS 0.8%CVE-2026-15722HIGH389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsingEPSS 0.8%CVE-2026-9064HIGH389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)EPSS 0.8%
References
https://access.redhat.com/errata/RHSA-2026:55421https://access.redhat.com/errata/RHSA-2026:55422https://access.redhat.com/errata/RHSA-2026:55423https://access.redhat.com/errata/RHSA-2026:55424https://access.redhat.com/errata/RHSA-2026:55425https://access.redhat.com/errata/RHSA-2026:55426https://access.redhat.com/errata/RHSA-2026:55530https://access.redhat.com/errata/RHSA-2026:55532https://access.redhat.com/errata/RHSA-2026:55756https://access.redhat.com/errata/RHSA-2026:55757https://access.redhat.com/errata/RHSA-2026:55758https://access.redhat.com/errata/RHSA-2026:55794