CVE-2020-27263
Last modified
CVE-2020-27263 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All versions, Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server: v7.68.804 and v7.66, Software Toolbox TOP Server: All 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.. EPSS estimates a 4.94% chance of exploitation in the next 30 days.
Description
KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All versions, Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server: v7.68.804 and v7.66, Software Toolbox TOP Server: All 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ge | Industrial Gateway Server | 7.66 |
| Ge | Industrial Gateway Server | 7.68.804 |
| Ptc | Kepware Kepserverex | 6.0 |
| Ptc | Kepware Kepserverex | 6.9 |
| Ptc | Opc-Aggregator | All versions |
| Ptc | Thingworx Industrial Connectivity | All versions |
| Ptc | Thingworx Kepware Server | 6.8 |
| Ptc | Thingworx Kepware Server | 6.9 |
| Rockwellautomation | Kepserver Enterprise | 6.6.504.0 |
| Rockwellautomation | Kepserver Enterprise | 6.9.572.0 |
| Softwaretoolbox | Top Server | >= 6.0, <= 6.9 |
References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02Third Party Advisory, US Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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