Cyber Resilience

CVE-2020-27265

Critical

Published: 14 January 2021

Published
14 January 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0013 31.6th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-27265 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Ge Industrial Gateway Server. Its CVSS base score is 9.8 (Critical).

Operationally, ranked at the 31.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

a stack-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and remotely execute code.

CWE(s)
CWE-121CWE-787

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

ge
industrial gateway server
7.66, 7.68.804
ptc
kepware kepserverex
6.0, 6.9
ptc
opc-aggregator
all versions
ptc
thingworx industrial connectivity
all versions
ptc
thingworx kepware server
6.8, 6.9
rockwellautomation
kepserver enterprise
6.6.504.0, 6.9.572.0
softwaretoolbox
top server
6.0 — 6.9

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References