CVE-2021-42666

Name: CVE-2021-42666
Creator: NVD / NIST
Published: 2021-11-05T13:15:08.887+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 4.41%

Last modified Jun 17, 2026

CVE-2021-42666 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter to quiz_question.php, which could let a malicious user extract sensitive data from the web server and in some cases use this vulnerability in order to get a remote code execution on the remote web server.. EPSS estimates a 4.41% chance of exploitation in the next 30 days.

Description

A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter to quiz_question.php, which could let a malicious user extract sensitive data from the web server and in some cases use this vulnerability in order to get a remote code execution on the remote web server.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

4.41%

90.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Engineers Online Portal Project	Engineers Online Portal	1.0

References

https://github.com/TheHackingRabbi/CVE-2021-42666Exploit, Third Party Advisory
https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101321Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/50453Exploit, Third Party Advisory, VDB Entry
https://www.sourcecodester.com/php/13115/engineers-online-portal-php.htmlProduct, Third Party Advisory
https://github.com/TheHackingRabbi/CVE-2021-42666Exploit, Third Party Advisory
https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101321Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/50453Exploit, Third Party Advisory, VDB Entry
https://www.sourcecodester.com/php/13115/engineers-online-portal-php.htmlProduct, Third Party Advisory

Timeline

Published: Nov 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42666?

How severe is CVE-2021-42666?

CVE-2021-42666 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 4.41% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42666?

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-2021-42666?

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

Scan your code now

Source: NVD / NIST