CVE-2021-24240

CVE-2021-24240 is a critical-severity vulnerability in Aivahthemes Business Hours Pro with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

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.

Frequently asked questions

What is CVE-2021-24240?
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.
How severe is CVE-2021-24240?
CVE-2021-24240 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24240 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24240?
CVE-2021-24240 affects Aivahthemes Business Hours Pro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24240?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-24240 published?
CVE-2021-24240 was published on 2021-04-22 and last updated on 2026-06-17.

References

Affected products (1)

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