# CVE-2026-106126: Tenable Identity Exposure command injection in Active Directory Events Listener

Source: https://junglewise.ai/threats/cve-2026-106126-a-command-injection-vulnerability-in-the-active-directory-events  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-08. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-106126 · Severity: critical · CVSS 9.9 · Published 2026-10-08

Tenable Identity Exposure is a SaaS platform that monitors Active Directory for security exposures. A command injection flaw in the Active Directory Events Listener component allows authenticated attackers with low privileges to execute arbitrary commands with system-level access on domain controllers, potentially compromising the entire Active Directory infrastructure.

Vendors: [Tenable](https://junglewise.ai/threats/vendors/tenable).

## Quick answers

**Is CVE-2026-106126 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106126 being exploited in the wild.

**How severe is CVE-2026-106126?** Critical severity, with a CVSS score of 9.9, published 8 October 2026.

**Which products and versions are affected?** Tenable Identity Exposure 3.125.0 and earlier.

**Is there a fix for CVE-2026-106126?** Yes: fixed in Identity Exposure 3.126.0. Until then: After upgrading to version 3.126.0, existing installations must run Register-TenableIOA.ps1 -Uninstall and reinstall the Active Directory Events Listener to fully resolve the issue. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-106126 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-106126?** Check whether you run Tenable Identity Exposure at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Identity Exposure 3.126.0

After upgrading to version 3.126.0, existing installations must run Register-TenableIOA.ps1 -Uninstall and reinstall the Active Directory Events Listener to fully resolve the issue.

## Technical details

The vulnerability is an OS command injection (CWE-78) in the Active Directory Events Listener of Tenable Identity Exposure SaaS. An authenticated, low-privileged attacker can inject commands that execute as SYSTEM on the PDC emulator via the network without user interaction. A fix requires upgrading to version 3.126.0 and reinstalling the listener with the Register-TenableIOA.ps1 script.

## Affected products

- Tenable Identity Exposure 3.125.0 and earlier

## Timeline

- 2026-09-09: disclosed
- 2026-10-08: patched: Version 3.126.0 released

## References

- [https://www.tenable.com/security/tns-2026-27](https://www.tenable.com/security/tns-2026-27)

## Related threats

- [Tenable Identity Exposure information disclosure in API endpoints](https://junglewise.ai/threats/cve-2026-13007-tenable-identity-exposure-information-disclosure-in-api-endpoints)