What is GHSA-x222-px97-5m97?

GHSA-x222-px97-5m97 is a security advisory published by GitHub Security Advisories with Critical severity. A denial-of-service security issue exists within RSLinx® Classic. The security issue stems from...

Which CVE IDs does GHSA-x222-px97-5m97 cover?

GHSA-x222-px97-5m97 covers the following CVE IDs: CVE-2026-9621. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-x222-px97-5m97Critical

A denial-of-service security issue exists within RSLinx® Classic. The security issue stems from...

Vendor

GitHub Security Advisories

Published

September 1, 2026

Last Modified

September 1, 2026

🔗 CVE IDs covered (1)

CVE-2026-9621 →

📋 Description

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

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-9621
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1794.html
https://github.com/advisories/GHSA-x222-px97-5m97