CVE-2020-24674

Name: CVE-2020-24674
Creator: NVD / NIST
Published: 2020-12-22T22:15:13.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.88%

Last modified Jun 17, 2026

CVE-2020-24674 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.. EPSS estimates a 2.88% chance of exploitation in the next 30 days.

Description

In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.88%

85.0th 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-2020-24674?

How severe is CVE-2020-24674?

CVE-2020-24674 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.88% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24674?

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-2020-24674?

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

Scan your code now

Source: NVD / NIST