CVE-2020-24675 json
Weak Authentication in Symphony Plus
published 2020-12-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17389
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
Summary
In S+ Operations and S+ History, it is possible that an unauthenticated user could inject values to the Operations History server (or standalone S+ History server) and ultimately write values to the controlled process.
Patch / fix
- ABB ABB Ability™ Symphony® Plus Operations 2.1 SP2 Rollup 2, 2.2, 3.3 Service Pack 1
- ABB ABB Ability™ Symphony® Plus Historian 3.2
Exploit prediction
1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- ABB ABB Ability™ Symphony® Plus Operations
- ABB ABB Ability™ Symphony® Plus Historian
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
search.abb.com
/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=Launch
mitigation, vendor-advisory
-
search.abb.com
/library/Download.aspx?DocumentID=2PAA123982&LanguageCode=en&DocumentPartId=&Action=Launch
mitigation, vendor-advisory
Sources
- CVE List CVE-2020-24675
- NVD CVE-2020-24675
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