Buffer overflow in Schneider-Electric Ecostruxure Control Expert
CVE-2020-7559
A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause a crash of the PLC simulator present in EcoStruxureª Control Expert software when receiving a specially crafted request over Modbus.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (78.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Schneider-Electric Ecostruxure Control Expert
- Plc Simulator On Ecostruxureª Control Expert (Now Unity Pro) (All Versions) — versions PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions)
Weakness classification (CWE)
References
- www.se.com/ww/en/download/document/SEVD-2020-315-07 (Product, Patch, Vendor Advisory)
- www.talosintelligence.com/vulnerability_reports/TALOS-2020-1140 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7559?
- CVE-2020-7559 is a high-severity vulnerability in Schneider-Electric Ecostruxure Control Expert, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2020-11-19.
- How severe is CVE-2020-7559?
- High severity. CVSS v3 base score is 7.5 out of 10.