CVE-2026-12645 Overview
CVE-2026-12645 is a missing authorization vulnerability [CWE-862] in Ivanti Neurons for IT Service Management (ITSM) versions before 2026.2. The flaw allows a remote authenticated attacker to execute arbitrary code on the server. Ivanti published the security advisory covering this and related ITSM CVEs on their support hub.
The vulnerability requires only low-privilege authentication and no user interaction. Successful exploitation crosses a security scope boundary, giving attackers control over server-side execution and access to sensitive service management data.
Critical Impact
Authenticated attackers can bypass authorization checks in Ivanti Neurons for ITSM and execute arbitrary code on the server, compromising confidentiality, integrity, and availability of the ITSM platform.
Affected Products
- Ivanti Neurons for ITSM versions prior to 2026.2
- On-premises deployments of Ivanti Neurons for ITSM
- Ivanti Neurons for ITSM cloud tenants running vulnerable builds
Discovery Timeline
- 2026-09-08 - CVE-2026-12645 published to the National Vulnerability Database
- 2026-09-09 - Last updated in the NVD database
Technical Details for CVE-2026-12645
Vulnerability Analysis
The vulnerability is classified as Missing Authorization under [CWE-862]. Ivanti Neurons for ITSM fails to enforce authorization checks on a server-side function that performs privileged operations. An authenticated user with low privileges can invoke that function and trigger arbitrary code execution on the underlying server.
Because the flaw crosses a security scope, exploitation can affect components beyond the vulnerable module. The result is full compromise of confidentiality, integrity, and availability of the ITSM instance. Attackers can leverage this access to pivot into connected assets, service catalogs, and integration credentials stored by the platform.
Ivanti addressed the issue in version 2026.2. Refer to the Ivanti Security Advisory for ITSM CVEs for the vendor's technical description and fixed builds.
Root Cause
The root cause is an absent or incorrectly evaluated authorization check on a server-side endpoint. The application authenticates the user session but does not verify whether the caller is authorized to invoke the sensitive operation. Any authenticated account, regardless of role, can reach the code path that ultimately executes arbitrary code.
Attack Vector
The attack vector is network-based and requires valid authentication to the ITSM application. An attacker with any low-privileged user account, including a self-service portal user in some deployments, can send a crafted request to the vulnerable endpoint. The request bypasses role checks and triggers code execution in the context of the ITSM service account. No user interaction is required.
No public proof-of-concept exploit is available at the time of publication. See the Ivanti Security Advisory for ITSM CVEs for additional context.
Stop Remote Code Execution Before It Runs
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Stop Exploit AttemptsDetection Methods for CVE-2026-12645
Indicators of Compromise
- Unexpected child processes spawned by the Ivanti Neurons for ITSM application service account, such as command shells, scripting hosts, or reconnaissance utilities.
- New or modified files in ITSM web application directories, including unfamiliar scripts, executables, or web shells.
- Outbound network connections from the ITSM server to unknown external hosts, particularly over non-standard ports.
- Authentication events from low-privileged accounts followed immediately by administrative or system-level activity on the ITSM host.
Detection Strategies
- Monitor ITSM application logs for repeated requests to sensitive API endpoints originating from low-privilege sessions.
- Correlate authenticated user sessions with process creation events on the ITSM server to surface authorization bypass patterns.
- Alert on any interactive process launched by the ITSM application pool or service account.
Monitoring Recommendations
- Ingest Ivanti Neurons for ITSM web, application, and audit logs into a centralized analytics platform for continuous review.
- Baseline normal parent-child process relationships for the ITSM service and alert on deviations.
- Track configuration and file integrity changes on ITSM servers, including scheduled tasks and startup entries.
How to Mitigate CVE-2026-12645
Immediate Actions Required
- Upgrade Ivanti Neurons for ITSM to version 2026.2 or later as documented in the vendor advisory.
- Inventory all ITSM instances, including test and staging environments, and confirm each is on a patched build.
- Review recent authentication logs and administrative activity for signs of exploitation prior to patching.
- Rotate credentials, API keys, and integration secrets associated with the ITSM platform if compromise is suspected.
Patch Information
Ivanti has released a fixed version in Ivanti Neurons for ITSM 2026.2. Consult the Ivanti Security Advisory for ITSM CVEs for the definitive list of fixed builds, upgrade prerequisites, and any post-upgrade validation steps. Apply the patch during a controlled maintenance window and validate that ITSM services return to normal operation.
Workarounds
- Restrict network access to the ITSM web interface to trusted management networks and VPN users only.
- Enforce multi-factor authentication on all ITSM accounts to reduce the pool of usable low-privilege credentials.
- Disable or tightly restrict self-service portal registration until the patch is applied.
- Monitor the ITSM service account for anomalous process execution and outbound connections while remediation is planned.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
