CVE-2026-11770 Red Hat CVE debrief

Who should care

System administrators and security teams responsible for 389 Directory Server installations should be aware of this vulnerability and take steps to mitigate it. This includes reviewing server configurations, monitoring system logs for suspicious activity related to LDAP operations, and considering additional security measures such as network segmentation or access controls. Organizations using 389 Directory Server should prioritize patching this vulnerability to prevent potential metadata exposure and review compensating controls for exposed systems while remediation is scheduled and verified. Also, they should check relevant monitoring, detection, and logs for exposed assets that need extra review and track exceptions, retest remediated assets, and close the item only after evidence is documented. The affected operator, platform, vulnerability-management, and security-team impact should be carefully evaluated to ensure proper mitigation and response to this vulnerability. Furthermore, it is essential to confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Lastly, planning vendor-supported updates or mitigations through normal change control where exposure is confirmed is crucial for minimizing risks associated with this vulnerability. Therefore, immediate action is required to address this issue effectively and protect against potential exploitation by malicious actors. The CVE record provides essential information that should be used to guide the response to this vulnerability, and it is recommended to review the official advisory or CVE record to validate affected scope, severity, and vendor guidance. In addition, it is vital to consider implementing additional security measures such as network segmentation or access controls to minimize the attack surface and prevent lateral movement in case of a successful exploit. By taking these steps, organizations can reduce the risk associated with this vulnerability and protect their systems from potential attacks. In conclusion, the vulnerability in 389 Directory Server requires immediate attention from system administrators and security teams to prevent the -

Technical summary

The vulnerability in 389 Directory Server allows an attacker to inject LDAP search filters, potentially leading to the exposure of sensitive server configuration metadata. This issue is particularly concerning because it can be exploited by unauthenticated remote attackers. The CleanAllRUV replication status-check extended operation is where the vulnerability resides, allowing for the extraction of sensitive information such as replication bind DNs and password storage scheme information.

Defensive priority

Organizations using 389 Directory Server should prioritize patching this vulnerability to prevent potential metadata exposure.

Recommended defensive actions

• Apply patches or updates provided by the vendor as soon as possible
• Review and update server configurations to minimize exposure
• Monitor system logs for suspicious activity related to LDAP operations
• Consider implementing additional security measures such as network segmentation or access controls
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE description indicates that an unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation, potentially extracting sensitive server configuration metadata. However, detailed information about affected versions, patches, or workarounds is limited in the provided source corpus.

Official resources