CVE-2021-42671

Name: CVE-2021-42671
Creator: NVD / NIST
Published: 2021-11-05T13:15:09.383+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 19.68%

Last modified Jun 17, 2026

CVE-2021-42671 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An incorrect access control vulnerability exists in Sourcecodester Engineers Online Portal in PHP in nia_munoz_monitoring_system/admin/uploads. An attacker can leverage this vulnerability in order to bypass access controls and access all the files uploaded to the web server without the need of authentication or authorization.. EPSS estimates a 19.68% chance of exploitation in the next 30 days.

Description

An incorrect access control vulnerability exists in Sourcecodester Engineers Online Portal in PHP in nia_munoz_monitoring_system/admin/uploads. An attacker can leverage this vulnerability in order to bypass access controls and access all the files uploaded to the web server without the need of authentication or authorization.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

19.68%

97.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-425

Affected Software

Vendor	Product	Versions
Engineers Online Portal Project	Engineers Online Portal	All versions

References

https://github.com/TheHackingRabbi/CVE-2021-42671Exploit, Third Party Advisory
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671Exploit, Third Party Advisory
https://www.sourcecodester.com/php/13115/engineers-online-portal-php.htmlProduct, Third Party Advisory
https://github.com/TheHackingRabbi/CVE-2021-42671Exploit, Third Party Advisory
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671Exploit, Third Party Advisory
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-2021-42671?

How severe is CVE-2021-42671?

CVE-2021-42671 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 19.68% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42671?

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-2021-42671?

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

Scan your code now

Source: NVD / NIST