Improper input validation in Beckhoff Twincat
CVE-2018-7502
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: -0.000
Affected products
- Beckhoff Twincat — versions 2.11, 3.1
- Beckhoff Twincat C\+\+ — versions 3.1
- Ics-Cert Beckhoff Twincat Plc Products — versions TwinCAT 3.1 Build 4022.4, TwinCAT 2.11 R3 2259, TwinCAT 3.1
Weakness classification (CWE)
References
- srcincite.io/advisories/src-2018-0007/
- www.securityfocus.com/bid/103487 (VDB Entry, Third Party Advisory, vdb-entry)
- ics-cert.us-cert.gov/advisories/ICSA-18-081-02 (US Government Resource, Third Party Advisory, Mitigation)
- download.beckhoff.com/download/Document/product-security/Advisories/advisory-20… (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-7502?
- CVE-2018-7502 is a high-severity vulnerability in Beckhoff Twincat, classified under Untrusted Pointer Dereference. CVSS score: 7.8/10. Published 2018-03-23.
- How severe is CVE-2018-7502?
- High severity. CVSS v3 base score is 7.8 out of 10.