CVE-2026-9621CWE-190
CVE-2026-9621
published September 1, 2026
What it is
A denial-of-service security issue exists within RSLinx® Classic. The security issue stems from improper handling of a malformed packet. A crafted CIP packet can cause the RSLinx® Classic service to crash, requiring a restart of the service to recover
The record
Technical detail
- CVSS
- 9.2 · NONE
- CVSS v4.0
- 9.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- EPSS
- 0.00428 · 36.0th percentile
- Weakness
- CWE-190 · Integer Overflow or Wraparound
- Published
- 2026-09-01T18:17Z
References (1)
EPSS history
Timeline