CVE-2021-24240

Name: CVE-2021-24240
Creator: NVD / NIST
Published: 2021-04-22T21:15:09.863+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.04%

Last modified Jun 17, 2026

CVE-2021-24240 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Business Hours Pro WordPress plugin through 5.5.0 allows a remote attacker to upload arbitrary files using its manual update functionality, leading to an unauthenticated remote code execution vulnerability.. EPSS estimates a 3.04% chance of exploitation in the next 30 days.

Description

The Business Hours Pro WordPress plugin through 5.5.0 allows a remote attacker to upload arbitrary files using its manual update functionality, leading to an unauthenticated remote code execution vulnerability.

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

3.04%

85.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Aivahthemes	Business Hours Pro	<= 5.5.0

References

https://codecanyon.net/item/business-hours-pro-wordpress-plugin/9414879Product, Third Party Advisory
https://wpscan.com/vulnerability/10528cb2-12a1-43f7-9b7d-d75d18fdf5bbThird Party Advisory
https://codecanyon.net/item/business-hours-pro-wordpress-plugin/9414879Product, Third Party Advisory
https://wpscan.com/vulnerability/10528cb2-12a1-43f7-9b7d-d75d18fdf5bbThird Party Advisory

Timeline

Published: Apr 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24240?

How severe is CVE-2021-24240?

CVE-2021-24240 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.04% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24240?

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-2021-24240?

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

Scan your code now

Source: NVD / NIST