CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HCVE-2020-27263
Critical (9.1). EPSS 6.0% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 6.0% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-787, CWE-122
- Published
- Modified
- Record from
- the NVD, synced
Affected
- ge:industrial_gateway_server
- ptc:kepware_kepserverex
- ptc:opc-aggregator
- ptc:thingworx_industrial_connectivity
- ptc:thingworx_kepware_server
- rockwellautomation:kepserver_enterprise
- softwaretoolbox:top_server