What is CVE-2021-46036?

CVE-2021-46036 is a critical-severity vulnerability in Mingsoft Mcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-02-18.

How severe is CVE-2021-46036?

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

Is CVE-2021-46036 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Mingsoft Mcms

CVE-2021-46036

An arbitrary file upload vulnerability in the component /ms/file/uploadTemplate.do of MCMS v5.2.4 allows attackers to execute arbitrary code.

Vulnerability class: Unrestricted File Upload

Published 2022-02-18 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.037 (89.4th percentile), scored 2026-09-25.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000

Affected products

Mingsoft Mcms — versions 5.2.4

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

lycshub.github.io/2021/12/28/MCMS-vulnerabilities/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46036?: CVE-2021-46036 is a critical-severity vulnerability in Mingsoft Mcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-02-18.
How severe is CVE-2021-46036?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-46036 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.