pfSense up to 2.4.4 WebGUI system_usermanager_addprivs.php descr Stored cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in pfSense up to 2.4.4 (Firewall Software). It has been declared as problematic. This vulnerability affects an unknown function of the file system_usermanager_addprivs.php of the component WebGUI. The manipulation of the argument descr as part of a Parameter leads to a cross site scripting vulnerability (Stored). The CWE definition for the vulnerability is CWE-79. As an impact it is known to affect integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors. CVE summarizes:

pfSense before 2.4.5 has stored XSS in system_usermanager_addprivs.php in the WebGUI via the descr parameter (aka full name) of a user.

The weakness was released 04/01/2020. This vulnerability was named CVE-2020-11457 since 04/01/2020. The attack can be initiated remotely. The successful exploitation requires a single authentication. Successful exploitation requires user interaction by the victim. Technical details and also a exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

It is declared as proof-of-concept. It is possible to download the exploit at

Upgrading to version 2.4.5 eliminates this vulnerability.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒


Name: Stored
Class: Cross site scripting / Stored
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔒
Status: Proof-of-Concept
Download: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Exploit-DB: 🔒

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pfSense 2.4.5


04/01/2020 Advisory disclosed
04/01/2020 +0 days CVE assigned
04/02/2020 +1 days VulDB entry created
10/07/2020 +188 days VulDB last update


Status: Not defined

CVE: CVE-2020-11457 (🔒)


Created: 04/02/2020 01:09 PM
Updated: 10/07/2020 06:47 AM
Changes: (1) source_exploitdb
Complete: 🔍


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