CVE-2020-27263
CVE-2020-27263 is a critical-severity vulnerability in Ge Industrial Gateway Server with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 6.4
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Ge Industrial Gateway Server
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-27263?
- 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.
- How severe is CVE-2020-27263?
- CVE-2020-27263 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2020-27263 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-27263?
- CVE-2020-27263 primarily affects Ge Industrial Gateway Server. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-27263?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-27263 published?
- CVE-2020-27263 was published on 2021-01-14 and last updated on 2026-06-17.
References
Affected products (11)
- cpe:2.3:a:ge:industrial_gateway_server:7.66:*:*:*:*:*:*:*
- cpe:2.3:a:ge:industrial_gateway_server:7.68.804:*:*:*:*:*:*:*
- cpe:2.3:a:ptc:kepware_kepserverex:6.0:*:*:*:*:*:*:*
- cpe:2.3:a:ptc:kepware_kepserverex:6.9:*:*:*:*:*:*:*
- cpe:2.3:a:ptc:opc-aggregator:-:*:*:*:*:*:*:*
- cpe:2.3:a:ptc:thingworx_industrial_connectivity:-:*:*:*:*:*:*:*
- cpe:2.3:a:ptc:thingworx_kepware_server:6.8:*:*:*:*:*:*:*
- cpe:2.3:a:ptc:thingworx_kepware_server:6.9:*:*:*:*:*:*:*
- cpe:2.3:a:rockwellautomation:kepserver_enterprise:6.6.504.0:*:*:*:*:*:*:*
- cpe:2.3:a:rockwellautomation:kepserver_enterprise:6.9.572.0:*:*:*:*:*:*:*
- cpe:2.3:a:softwaretoolbox:top_server:*:*:*:*:*:*:*:*
More vulnerabilities in Ge Industrial Gateway Server
- CVE-2022-2825 — Critical (CVSS 9.8): This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX…
- CVE-2020-27265 — Critical (CVSS 9.8): KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions,…
- CVE-2023-5908 — Critical (CVSS 9.1): KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak…
- CVE-2022-2848 — Critical (CVSS 9.1): This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX…
- CVE-2020-27267 — Critical (CVSS 9.1): KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions),…
- CVE-2023-5909 — High (CVSS 7.5): KEPServerEX does not properly validate certificates from clients which may allow unauthenticated users to connect.
All CVEs affecting Ge Industrial Gateway Server →
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