CVE-2021-34257
CVSS v3
8.8
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2022-03-31
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.
Is CVE-2021-34257 actively exploited?
Active exploitation of CVE-2021-34257 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-34257?
CVE-2021-34257 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-34257 affecting your environment?
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