CVE-2021-26753
CVSS v3
9.9
CRITICAL
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
NeDi 1.9C allows an authenticated user to inject PHP code in the System Files function on the endpoint /System-Files.php via the txt HTTP POST parameter. This allows an attacker to obtain access to the operating system where NeDi is installed and to all application data.
Technical details
- Published
- 2021-02-12
Frequently asked questions
What is CVE-2021-26753?
NeDi 1.9C allows an authenticated user to inject PHP code in the System Files function on the endpoint /System-Files.php via the txt HTTP POST parameter. This allows an attacker to obtain access to the operating system where NeDi is installed and to all application data.
Is CVE-2021-26753 actively exploited?
Active exploitation of CVE-2021-26753 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-26753?
CVE-2021-26753 has a CVSS v3 base score of 9.9 (CRITICAL severity).
Is CVE-2021-26753 affecting your environment?
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