CVE-2026-12269 Overview
CVE-2026-12269 is a configuration injection vulnerability in Zohocorp ManageEngine DDI Central 6.2.0 builds below 6201. The flaw resides in the High Availability (HA) configuration workflow, where the application fails to properly validate input written to the Keepalived configuration file. An authenticated operator-level user can inject arbitrary directives into the Keepalived configuration and leverage them to execute commands as root on the DDI Central host. The weakness is categorized under CWE-269: Improper Privilege Management.
Critical Impact
An authenticated low-privileged operator can escalate to root-level command execution on the DDI Central server, fully compromising DNS, DHCP, and IP address management services.
Affected Products
- Zohocorp ManageEngine DDI Central 6.2.0
- All builds below 6201
- Deployments running the HA (Keepalived) configuration workflow
Discovery Timeline
- 2026-09-28 - CVE-2026-12269 published to NVD
- 2026-09-29 - Last updated in NVD database
Technical Details for CVE-2026-12269
Vulnerability Analysis
ManageEngine DDI Central provides unified DNS, DHCP, and IP Address Management (DDIM). The HA workflow uses Keepalived, a Linux routing software that provides failover through the Virtual Router Redundancy Protocol (VRRP). To support failover, DDI Central generates a Keepalived configuration file consumed by the keepalived daemon, which runs with root privileges.
The HA configuration form accepts operator-supplied values that are written into this configuration without sufficient sanitization. Keepalived supports directives such as notify_master, notify_backup, and notify_fault, each of which specifies a script path executed by the daemon on state transitions. An operator can inject these directives to point at attacker-controlled commands, which the Keepalived process will then run as root.
The EPSS score of 6.991% places this vulnerability in the 93.9th percentile for exploitation likelihood, reflecting the straightforward path from configuration injection to privileged command execution.
Root Cause
The root cause is insufficient input validation and improper privilege separation [CWE-269] in the HA configuration handler. Operator-level users should not control content that is interpreted by a root-level process. The HA form writes user-controlled fields into the Keepalived configuration file verbatim, allowing injection of script-executing directives.
Attack Vector
Exploitation requires network access to the DDI Central web interface and valid operator credentials. The attacker authenticates, navigates to the HA configuration workflow, and submits specially crafted values that embed Keepalived directives referencing an attacker-controlled script or command. When Keepalived reloads or encounters a state change, it executes the injected payload as root. Full details are available in the ManageEngine Security Update CVE-2026-12269 advisory.
Detection Methods for CVE-2026-12269
Indicators of Compromise
- Unexpected modifications to /etc/keepalived/keepalived.conf or the DDI Central-managed equivalent
- Presence of notify_master, notify_backup, notify_fault, or vrrp_script entries referencing non-standard paths or shell commands
- Child processes of keepalived running shells, interpreters, or network utilities such as bash, python, nc, or curl
- New or modified cron jobs, SSH keys, or SUID binaries created shortly after HA configuration changes
Detection Strategies
- Audit DDI Central application logs for HA configuration submissions and correlate operator identity with timestamps of Keepalived configuration file changes
- Monitor process ancestry on the DDI Central host for root-owned processes spawned by keepalived that are not legitimate failover scripts
- Baseline the contents of the Keepalived configuration and alert on diffs introduced outside of approved change windows
Monitoring Recommendations
- Forward DDI Central audit logs and host-level process telemetry to a centralized analytics platform for correlation
- Enable file integrity monitoring on Keepalived configuration directories and any scripts referenced by VRRP state transitions
- Alert on new operator-level accounts or privilege changes within DDI Central, as these precede abuse of the HA workflow
How to Mitigate CVE-2026-12269
Immediate Actions Required
- Upgrade Zohocorp ManageEngine DDI Central to build 6201 or later as specified in the vendor advisory
- Review all operator-level accounts and remove or demote any that do not require HA configuration permissions
- Inspect the current Keepalived configuration for unauthorized notify_* or vrrp_script directives and remove any suspicious entries
- Rotate credentials and SSH keys on the DDI Central host if evidence of post-exploitation activity is observed
Patch Information
Zohocorp has released a fixed build of DDI Central addressing the Keepalived configuration injection. Administrators should apply build 6201 or later. Refer to the ManageEngine Security Update CVE-2026-12269 for upgrade instructions and verification steps.
Workarounds
- Restrict network access to the DDI Central administrative interface to trusted management networks only
- Enforce the principle of least privilege by limiting the number of accounts with operator-level roles that can modify HA settings
- Place the Keepalived configuration file under file integrity monitoring and alert on any unexpected modifications until the patch is applied
- Where HA is not required, disable the Keepalived-based failover workflow to remove the attack surface
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.