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Critical severity9.8NVD Advisory· Published Dec 20, 2021· Updated Jun 17, 2026

CVE-2021-44159

CVE-2021-44159

Description

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • 4MOSAn/Gcb Doctor3 versions
    cpe:2.3:a:4mosan:gcb_doctor:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:4mosan:gcb_doctor:*:*:*:*:*:*:*:*range: <2021-09-16
    • (no CPE)
    • (no CPE)range: unspecified

Patches

Vulnerability mechanics

References

1

News mentions

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