Vulnerability · Published Nov 19, 2020 · Assigned by schneider
CVE-2020-7559
High 7.5
In plain English
A high-severity buffer overflow in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.9%top 20.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) | PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) |
Weakness: CWE-120
References
- https://www.se.com/ww/en/download/document/SEVD-2020-315-07 x_refsource_MISC
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1140 x_refsource_MISC