CVE-2026-9624CWE-191

CVE-2026-9624

published September 1, 2026

CVSS
8.7
EPSS
0%
Percentile
23.6
In the wild
Unconfirmed
What it is

A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet can cause the RSLinx® Classic service to crash due to insufficient data length validation, requiring a  restart of the service to recover.

The record
Technical detail
CVSS
8.7 · NONE
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00312 · 23.6th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-09-01T18:17Z
References (1)
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1794.html · [email protected]
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 13:35Z
    RSLinx Classic® - Multiple Vulnerabilities
    cvelistv5