CVE-2020-7566
Last modified
CVE-2020-7566 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Schneider-Electric | Modicon M221 Firmware | All versions |
References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party Advisory, US Government Resource
- https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party Advisory, US Government Resource
- https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-7566?
How severe is CVE-2020-7566?
How do I fix CVE-2020-7566?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-7560A CWE-123: Write-what-where Condition vulnerability exists i…8.6
- CVE-2020-7561A CWE-306: Missing Authentication for Critical Function vuln…9.8
- CVE-2020-7562A CWE-125: Out-of-Bounds Read vulnerability exists in the We…8.1
- CVE-2020-7563A CWE-787: Out-of-bounds Write vulnerability exists in the W…8.8
- CVE-2020-7564A CWE-120: Buffer Copy without Checking Size of Input ('Clas…8.8
- CVE-2020-7565A CWE-326: Inadequate Encryption Strength vulnerability exis…7.3
- CVE-2020-7567A CWE-311: Missing Encryption of Sensitive Data vulnerabilit…5.7
- CVE-2020-7568A CWE-200: Exposure of Sensitive Information to an Unauthori…4.3
- CVE-2020-7569A CWE-434 Unrestricted Upload of File with Dangerous Type vu…8.8
- CVE-2020-7570A CWE-79 Improper Neutralization of Input During Web Page Ge…5.4
- CVE-2020-7571A CWE-79 Multiple Improper Neutralization of Input During We…5.4
- CVE-2020-7572A CWE-611 Improper Restriction of XML External Entity Refere…8.8
Are you affected by CVE-2020-7566?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST