# Security Updates - CVE-2018-20339 | ManageEngine OpManager

## CVE-2018-20339

### Unauthenticated Remote Code Execution (RCE) vulnerability

## Vulnerability Details

| Field | Details |
|---|---|
| Impact | **CVSS V3 rating: 10 (Critical)** |
| Reported | 20 Nov 2018 |
| Fixed | 20 Dec 2018 |
| Affected Builds | Till Build 123238 |
| Fixed in | Build 123239 |
| Overview | XSS vulnerability in 'Notes' section in Alarms. |
| **Recommended Fix** | **Upgrade to [OpManager Version 12.3.239](https://www.manageengine.com/network-monitoring/service-packs.html) or above.** |

### Description

A XSS vulnerability was discovered in OpManager before version 12.3.239. This vulnerability affected the 'Notes' column of the 'Alarms' section in OpManager compromising the application.

We recommend that you [upgrade to OpManager Version 12.3.239](https://www.manageengine.com/network-monitoring/service-packs.html) and above to fix this issue.

### Source and Acknowledgements

Find out more about CVE-2018-20339 from the [CVE dictionary](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20339).

### Need Help?

For clarification or corrections please contact our [support team](https://www.manageengine.com/network-monitoring/support.html) or email us at [opmanager-support@manageengine.com](mailto:opmanager-support@manageengine.com).