CVE-2020-24679

Name: CVE-2020-24679
Creator: NVD / NIST
Published: 2020-12-22T22:15:13.583+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.75%

Last modified Jun 17, 2026

CVE-2020-24679 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.. EPSS estimates a 1.75% chance of exploitation in the next 30 days.

Description

A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.75%

74.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Abb	Symphony \+ Historian	3.0	—
Abb	Symphony \+ Historian	3.1	—
Abb	Symphony \+ Operations	1.1	—
Abb	Symphony \+ Operations	2.0	—
Abb	Symphony \+ Operations	2.1	Sp1
Abb	Symphony \+ Operations	3.0	—
Abb	Symphony \+ Operations	3.1	—
Abb	Symphony \+ Operations	3.2	—
Abb	Symphony \+ Operations	3.3	—

References

https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=2PAA123982&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=2PAA123982&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory

Timeline

Published: Dec 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-24679?

How severe is CVE-2020-24679?

CVE-2020-24679 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.75% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24679?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-24679?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST