Vulnerability Details : 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.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2020-27263
- 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:ge:industrial_gateway_server:7.66:*:*:*:*:*:*:*
- cpe:2.3:a:ge:industrial_gateway_server:7.68.804:*:*:*:*:*:*:*
- cpe:2.3:a:softwaretoolbox:top_server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27263
1.55%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 86 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27263
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:P |
10.0
|
4.9
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
3.9
|
5.2
|
NIST |
CWE ids for CVE-2020-27263
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: ics-cert@hq.dhs.gov (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27263
-
https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02
PTC Kepware KEPServerEX (Update A) | CISAThird Party Advisory;US Government Resource
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