CVE-2021-3317
CVSS v3
8.8
HIGH
EPSS Score
41.4 %
exploit probability, as of 2026-10-04
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter.
Technical details
- Published
- 2021-01-26
- Exploit-DB
- EDB-49511
Frequently asked questions
What is CVE-2021-3317?
KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter.
Is CVE-2021-3317 actively exploited?
Active exploitation of CVE-2021-3317 has not been confirmed. Its EPSS score was 41.4% on 2026-10-04, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-3317?
CVE-2021-3317 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-3317 affecting your environment?
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