CVE-2021-42580

Name: CVE-2021-42580
Creator: NVD / NIST
Published: 2021-11-15T16:15:10.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 9.98%

Last modified Jun 17, 2026

CVE-2021-42580 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Sourcecodester Online Learning System 2.0 is vunlerable to sql injection authentication bypass in admin login file (/admin/login.php) and authenticated file upload in (Master.php) file , we can craft these two vunlerablities to get unauthenticated remote command execution.. EPSS estimates a 9.98% chance of exploitation in the next 30 days.

Description

Sourcecodester Online Learning System 2.0 is vunlerable to sql injection authentication bypass in admin login file (/admin/login.php) and authenticated file upload in (Master.php) file , we can craft these two vunlerablities to get unauthenticated remote command execution.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

9.98%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Oretnom23	Online Learning System	2.0

References

http://packetstormsecurity.com/files/164985/Online-Learning-System-2.0-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/DjebbarAnon/online-learning-system-v2-sqli-authentication-bypass-file-upload-unauthenticated-RCEExploit, Third Party Advisory
https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/CVE-nu11-07Exploit, Third Party Advisory
https://www.nu11secur1ty.com/2021/09/cve-nu11-07-elearning-v2by-oretnom23-is.htmlExploit, Third Party Advisory
https://www.nu11secur1ty.com/2021/11/cve-2021-42580.htmlExploit, Third Party Advisory
http://packetstormsecurity.com/files/164985/Online-Learning-System-2.0-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/DjebbarAnon/online-learning-system-v2-sqli-authentication-bypass-file-upload-unauthenticated-RCEExploit, Third Party Advisory
https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/CVE-nu11-07Exploit, Third Party Advisory
https://www.nu11secur1ty.com/2021/09/cve-nu11-07-elearning-v2by-oretnom23-is.htmlExploit, Third Party Advisory
https://www.nu11secur1ty.com/2021/11/cve-2021-42580.htmlExploit, Third Party Advisory

Timeline

Published: Nov 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42580?

How severe is CVE-2021-42580?

CVE-2021-42580 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 9.98% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42580?

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.

Are you affected by CVE-2021-42580?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST