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7.5
HIGH CVSS 3.1
CVE-2020-24686
ABB AC500 Denial of Service (DoS)
Description

The vulnerabilities can be exploited to cause the web visualization component of the PLC to stop and not respond, leading to genuine users losing remote visibility of the PLC state. If a user attempts to login to the PLC while this vulnerability is exploited, the PLC will show an error state and refuse connections to Automation Builder. The execution of the PLC application is not affected by this vulnerability. This issue affects ABB AC500 V2 products with onboard Ethernet.

INFO

Published Date :

Feb. 26, 2021, 4:15 p.m.

Last Modified :

Nov. 21, 2024, 5:15 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2020-24686 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 Abb pm554_firmware
2 Abb pm556_firmware
3 Abb pm564_firmware
4 Abb pm566_firmware
5 Abb pm572_firmware
6 Abb pm573_firmware
7 Abb pm554
8 Abb pm556
9 Abb pm564
10 Abb pm566
11 Abb pm572
12 Abb pm573
: Total Affected Vendor : 1 | Products : 12
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 HIGH [email protected]
CVSS 3.1 HIGH [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-2020-24686.

URL Resource
https://search.abb.com/library/Download.aspx?DocumentID=3ADR010645&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=3ADR010645&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-24686 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-2020-24686 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-2020-24686 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-2020-24686 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 https://search.abb.com/library/Download.aspx?DocumentID=3ADR010645&LanguageCode=en&DocumentPartId=&Action=Launch
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Mar. 05, 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://search.abb.com/library/Download.aspx?DocumentID=3ADR010645&LanguageCode=en&DocumentPartId=&Action=Launch No Types Assigned https://search.abb.com/library/Download.aspx?DocumentID=3ADR010645&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
    Added CWE NIST CWE-400
    Added CPE Configuration AND OR *cpe:2.3:o:abb:pm554_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:abb:pm554:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:abb:pm556_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:abb:pm556:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:abb:pm564_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:abb:pm564:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:abb:pm566_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:abb:pm566:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:abb:pm572_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:abb:pm572:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:abb:pm573_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:abb:pm573:-:*:*:*:*:*:*:*
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: 7.5
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.

0.56 }} -0.56%

score

0.65460

percentile