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Fencer Intel
high 7.8

CVE-2020-24676 json

Insecure Windows Services in Symphony Plus

published 5y ago modified 4mo ago also EUVD-2020-17390

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

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.

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

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Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/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-274 Improper Handling of Insufficient Privileges

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.