Quick answers
- Is CVE-2026-9625 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9625 being exploited in the wild.
- How severe is CVE-2026-9625?
- Informational severity, with a CVSS score of 8.7, published 1 September 2026.
- Which products and versions are affected?
- Rockwell Automation RSLinx Classic 4.50 and prior.
- Is there a fix for CVE-2026-9625?
- A patch was published on 2026-09-01: Patch available in RSLinx Classic v4.60 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-9625 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-9625?
- Check whether you run Rockwell Automation RSLinx Classic at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
CVE-2026-9625 is a buffer overflow vulnerability (CWE-120) in RSLinx Classic's CIP packet handling. The vulnerability occurs when processing a crafted CIP packet containing an oversized embedded message request, causing insufficient bounds checking on the input data. The attack is network-based and requires no authentication or user interaction—an attacker only needs network connectivity to the service to send the malicious packet. Successful exploitation results in a crash of the RSLinx Classic service, requiring manual restart. The vulnerability affects versions 4.50 and prior; patches are available in version 4.60 and later.
Affected products
- Rockwell Automation RSLinx Classic 4.50 and prior
Timeline
- 2026-09-01: disclosed
- 2026-09-01: patched: Patch available in RSLinx Classic v4.60