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Vulnerability record · CVE-2020-27265 · published 14 January 2021

CVE-2020-27265: Ge industrial gateway server stack-based buffer overflow vulnerability

Ge · Industrial Gateway Server

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

9.8 CVSS 3.1 Critical EPSS 10% · top 4.5% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02 Third Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-2825Ge industrial gateway server stack-based buffer overflow vulnerabilityThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX 6.11.718.0. Authentication is n…EPSS 3.4%9.8CVE-2023-0754Ge digital industrial gateway server integer overflow vulnerabilityThe affected products are vulnerable to an integer overflow or wraparound, which could  allow an attacker to crash the server and remotely execute ar…EPSS 2.9%9.8CVE-2023-0755Ge digital industrial gateway server vulnerabilityThe affected products are vulnerable to an improper validation of array index, which could allow an attacker to crash the server and remotely execute…EPSS 12%9.1CVE-2023-5908Ge industrial gateway server heap-based buffer overflow vulnerabilityKEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.EPSS 0.96%9.1CVE-2022-2848Ge industrial gateway server heap-based buffer overflow vulnerabilityThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX 6.11.718.0. Authentication is n…EPSS 3.4%9.1CVE-2020-27263Ge industrial gateway server heap-based buffer overflow vulnerabilityKEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All versions, Ro…EPSS 4.9%9.1CVE-2020-27267Ge industrial gateway server use after free vulnerabilityKEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions), OPC-Aggregator (all versions), Ro…EPSS 4.9%7.8CVE-2023-29445Ptc kepware kepserverex uncontrolled search path element vulnerabilityAn uncontrolled search path element vulnerability (DLL hijacking) has been discovered that could allow a locally authenticated adversary to escalate …EPSS 0.24%

Source: NIST National Vulnerability Database (record CVE-2020-27265), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.