7.5
HIGH
CVE-2021-21000
WAGO PFC200 Denial of Service (DoS) Vulnerability
Description

On WAGO PFC200 devices in different firmware versions with special crafted packets an attacker with network access to the device could cause a denial of service for the login service of the runtime.

INFO

Published Date :

May 24, 2021, 11:15 a.m.

Last Modified :

May 28, 2021, 3:11 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-21000 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 Wago 750-831_firmware
2 Wago 750-852_firmware
3 Wago 750-880_firmware
4 Wago 750-881_firmware
5 Wago 750-889_firmware
6 Wago 750-829_firmware
7 Wago 750-882_firmware
8 Wago 750-885_firmware
9 Wago 750-891_firmware
10 Wago 750-823_firmware
11 Wago 750-832_firmware
12 Wago 750-862_firmware
13 Wago 750-890_firmware
14 Wago 750-893_firmware
15 Wago 750-8202_firmware
16 Wago 750-8203_firmware
17 Wago 750-8204_firmware
18 Wago 750-8206_firmware
19 Wago 750-8207_firmware
20 Wago 750-8208_firmware
21 Wago 750-8210_firmware
22 Wago 750-8211_firmware
23 Wago 750-8212_firmware
24 Wago 750-8213_firmware
25 Wago 750-8214_firmware
26 Wago 750-8216_firmware
27 Wago 750-8217_firmware
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-2021-21000.

URL Resource
https://cert.vde.com/en-us/advisories/vde-2021-014 Third Party Advisory

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-2021-21000 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-21000 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 [email protected]

    May. 14, 2024

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

    May. 28, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://cert.vde.com/en-us/advisories/vde-2021-014 No Types Assigned https://cert.vde.com/en-us/advisories/vde-2021-014 Third Party Advisory
    Added CWE NIST CWE-770
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-823_firmware:*:*:*:*:*:*:*:* versions up to (including) fw07 OR cpe:2.3:h:wago:750-823:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-829_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-829:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-831_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-831:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-832_firmware:*:*:*:*:*:*:*:* versions up to (including) fw06 OR cpe:2.3:h:wago:750-832:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-852_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-852:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-862_firmware:*:*:*:*:*:*:*:* versions up to (including) fw07 OR cpe:2.3:h:wago:750-862:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-880_firmware:*:*:*:*:*:*:*:* versions up to (including) fw15 OR cpe:2.3:h:wago:750-880:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-881_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-881:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-882_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-882:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-885_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-885:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-889_firmware:*:*:*:*:*:*:*:* versions up to (including) fw14 OR cpe:2.3:h:wago:750-889:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-890_firmware:*:*:*:*:*:*:*:* versions up to (including) fw07 OR cpe:2.3:h:wago:750-890:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-891_firmware:*:*:*:*:*:*:*:* versions up to (including) fw07 OR cpe:2.3:h:wago:750-891:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-893_firmware:*:*:*:*:*:*:*:* versions up to (including) fw07 OR cpe:2.3:h:wago:750-893:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8202_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8202:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8203_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8203:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8204_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8204:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8206_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8206:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8207_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8207:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8208_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8208:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8210_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8210:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8211_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8211:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8212_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8212:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8213_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8213:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8214_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8214:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8216_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8216:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:wago:750-8217_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 03.06.19_\(18\) OR cpe:2.3:h:wago:750-8217:-:*:*:*:*:*:*:*
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.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-21000 is associated with the following CWEs:

Exploit Prediction

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

0.10 }} 0.01%

score

0.41923

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability