How severe is CVE-2021-34257?

CVE-2021-34257 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-34257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34257?

CVE-2021-34257 affects Wpanel Cms Project Wpanel Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34257?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-34257 published?

CVE-2021-34257 was published on 2022-03-31 and last updated on 2026-06-17.

CVE-2021-34257

CVE-2021-34257 is a high-severity vulnerability in Wpanel Cms Project Wpanel Cms with a CVSS 3.x base score of 8.8. 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

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Wpanel Cms Project Wpanel Cms
Published: 2022-03-31
Last modified: 2026-06-17

Description

Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.

Frequently asked questions

What is CVE-2021-34257?: Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
How severe is CVE-2021-34257?: CVE-2021-34257 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-34257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34257?: CVE-2021-34257 affects Wpanel Cms Project Wpanel Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-34257 published?: CVE-2021-34257 was published on 2022-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wpanel_cms_project:wpanel_cms:*:*:*:*:*:*:*:*

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