Kernel drivers in Beckhoff TwinCAT 3.1 Build 4022.4, TwinCAT 2.11 R3 2259, and TwinCAT 3.1 lack proper validation of user-supplied pointer values. An attacker who is able to execute code on the target may be able to exploit this vulnerability to obtain SYSTEM privileges.
Published 2018-03-23 17:29:00
Updated 2018-05-23 01:29:03
Source ICS-CERT
View at NVD,   CVE.org
Vulnerability category: Input validationExecute code

Exploit prediction scoring system (EPSS) score for CVE-2018-7502

0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-7502

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.2
HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
NIST
7.8
HIGH CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST

CWE ids for CVE-2018-7502

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)
  • The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
    Assigned by: ics-cert@hq.dhs.gov (Secondary)

References for CVE-2018-7502

Products affected by CVE-2018-7502

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