8.2

CVE-2025-9166: rockwell automation controllogix 5580 NULL Pointer Dereference

CVSS: 8.2v4.0HighAnalyzed
Published 09-09-2025Last modified 09-09-2025
Open JSON

Vulnerability summary

CVE-2025-9166 is a high (CVSS 8.2) NULL Pointer Dereference vulnerability in rockwell automation controllogix 5580. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.4% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.43%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-09-2025
    PublishedVulnerability first disclosed.
  2. 09-09-2025
    Last modifiedVulnerability information updated.

Description

A denial-of-service security issue exists in the affected product and version. The security issue stems from the controller repeatedly attempting to forward messages. The issue could result in a major nonrecoverable fault on the controller.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

+0.02 pp

From 0.41% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.43%

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

Rockwell automation1 product
Rockwellautomation1 product

2 vendors · 2 products

References

1 links