7.5

CVE-2020-24686: abb ac500 v2 products with onboard ethernet Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighModified
Published 26-02-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-24686 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in abb ac500 v2 products with onboard ethernet. EPSS estimates a 2.50% chance of exploitation in the next 30 days, higher than 84.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
2.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-02-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

The vulnerabilities can be exploited to cause the web visualization component of the PLC to stop and not respond, leading to genuine users losing remote visibility of the PLC state. If a user attempts to login to the PLC while this vulnerability is exploited, the PLC will show an error state and refuse connections to Automation Builder. The execution of the PLC application is not affected by this vulnerability. This issue affects ABB AC500 V2 products with onboard Ethernet.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

2.50%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

0.00 pp

From 2.50% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Abb7 products

1 vendor · 7 products

References

1 links