What is CVE-2021-44159?

CVE-2021-44159 is a critical-severity vulnerability in 4mosan Gcb Doctor, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-12-20.

How severe is CVE-2021-44159?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in 4mosan Gcb Doctor

CVE-2021-44159

4MOSAn GCB Doctor’s file upload function has improper user privilege control. A remote attacker can upload arbitrary files including webshell files without authentication and execute arbitrary code in order to perform arbitrary system operations or deny of service attack.

Vulnerability class: Unrestricted File Upload

EPSS: 0.034 (87.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

4mosan Gcb Doctor — versions unspecified
4mosan Gcb_doctor

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

twcert@cert.org.tw (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-44159?: CVE-2021-44159 is a critical-severity vulnerability in 4mosan Gcb Doctor, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-12-20.
How severe is CVE-2021-44159?: Critical severity. CVSS v3 base score is 9.8 out of 10.