CVE-2020-24676

Name: CVE-2020-24676
Creator: NVD / NIST
Published: 2020-12-22T22:15:13.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2020-24676 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In Symphony Plus Operations and Symphony Plus Historian, some services can be vulnerable to privilege escalation attacks. An unprivileged (but authenticated) user could execute arbitrary code and result in privilege escalation, depending on the user that the service runs as.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

Description

In Symphony Plus Operations and Symphony Plus Historian, some services can be vulnerable to privilege escalation attacks. An unprivileged (but authenticated) user could execute arbitrary code and result in privilege escalation, depending on the user that the service runs as.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.41%

32.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-274

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-2020-24676?

How severe is CVE-2020-24676?

CVE-2020-24676 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24676?

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-2020-24676?

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

Scan your code now

Source: NVD / NIST