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9.8
CRITICAL CVSS 3.1
CVE-2016-4503
Moxa Device Server Web Console Authentication Bypass Vulnerability
Description

Moxa Device Server Web Console 5232-N allows remote attackers to bypass authentication, and consequently modify settings and data, via vectors related to reading a cookie parameter containing a UserId value.

INFO

Published Date :

July 12, 2016, 2 a.m.

Last Modified :

April 12, 2025, 10:46 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2016-4503 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Moxa device_server_web_console_5232-n_firmware
2 Moxa device_server_web_console_5232-n
: Total Affected Vendor : 1 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 CRITICAL [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-4503.

URL Resource
http://www.securityfocus.com/bid/91670 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-189-02 Third Party Advisory US Government Resource
http://www.securityfocus.com/bid/91670 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-189-02 Third Party Advisory US Government Resource
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-4503 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-4503 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-4503 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2016-4503 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91670
    Added Reference https://ics-cert.us-cert.gov/advisories/ICSA-16-189-02
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Sep. 13, 2021

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.securityfocus.com/bid/91670 No Types Assigned http://www.securityfocus.com/bid/91670 Third Party Advisory, VDB Entry
    Changed CPE Configuration AND OR *cpe:2.3:a:moxa:device_server_web_console_5232-n_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:moxa:device_server_web_console_5232-n:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:moxa:device_server_web_console_5232-n_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:moxa:device_server_web_console_5232-n:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91670 [No Types Assigned]
  • Modified Analysis by [email protected]

    Jul. 12, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 AND OR *cpe:2.3:a:moxa:device_server_web_console_5232-n_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:moxa:device_server_web_console_5232-n:-:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://ics-cert.us-cert.gov/advisories/ICSA-16-189-02 US Govt Resource https://ics-cert.us-cert.gov/advisories/ICSA-16-189-02 Advisory, US Govt Resource
    Added CWE CWE-287
  • Initial Analysis by [email protected]

    Jul. 12, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.81 }} -1.13%

score

0.81188

percentile