CVE-2020-7533
CRITICALCVSS 9.8/10EPSS 2.30%
Last modified
CVE-2020-7533 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. CWE-287: Improper Authentication vulnerability exists which could cause the execution of commands on the webserver without authentication when sending specially crafted HTTP requests.. EPSS estimates a 2.30% chance of exploitation in the next 30 days.
Description
CWE-287: Improper Authentication vulnerability exists which could cause the execution of commands on the webserver without authentication when sending specially crafted HTTP requests.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Schneider-Electric | Modicon M340 Bmxp3420302 Firmware | < 3.20 |
| Schneider-Electric | Modicon M340 Bmxp342000 Firmware | < 3.20 |
| Schneider-Electric | Modicon M340 Bmxp341000 Firmware | < 3.20 |
| Schneider-Electric | Modicon M340 Bmxp3420102 Firmware | < 3.20 |
| Schneider-Electric | Bmxnoe0100 Firmware | < 3.3 |
| Schneider-Electric | Bmxnoe0110 Firmware | < 6.5 |
| Schneider-Electric | Bmxnoc0401 Firmware | < 2.10 |
| Schneider-Electric | Tsxp574634 Firmware | < 6.1 |
| Schneider-Electric | Tsxp575634 Firmware | < 6.1 |
| Schneider-Electric | Tsxp576634 Firmware | < 6.1 |
| Schneider-Electric | Tsxety4103 Firmware | < 6.2 |
| Schneider-Electric | Tsxety5103 Firmware | < 6.4 |
| Schneider-Electric | 140noe77111 Firmware | < 7.1 |
| Schneider-Electric | 140noc78000 Firmware | < 1.74 |
| Schneider-Electric | 140noc77101 Firmware | < 1.08 |
| Schneider-Electric | 140cpu65260 Firmware | < 6.1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-7533?
CWE-287: Improper Authentication vulnerability exists which could cause the execution of
commands on the webserver without authentication when sending specially crafted HTTP
requests.
How severe is CVE-2020-7533?
CVE-2020-7533 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.30% probability of exploitation in the next 30 days.
How do I fix CVE-2020-7533?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
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Are you affected by CVE-2020-7533?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST