What is CVE-2021-42644?

CVE-2021-42644 is a medium-severity vulnerability in Cmseasy, classified under Files or Directories Accessible to External Parties. CVSS score: 6.5/10. Published 2022-05-17.

How severe is CVE-2021-42644?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Cmseasy

CVE-2021-42644

cmseasy V7.7.5_20211012 is affected by an arbitrary file read vulnerability. After login, the configuration file information of the website such as the database configuration file (config / config_database) can be read through this vulnerability.

Published 2022-05-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Cmseasy — versions 7.7.5_20211012

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

jdr2021.github.io/2021/10/14/CmsEasy_7.7.5_20211012存在任意文件写入和任意文件读取漏洞/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42644?: CVE-2021-42644 is a medium-severity vulnerability in Cmseasy, classified under Files or Directories Accessible to External Parties. CVSS score: 6.5/10. Published 2022-05-17.
How severe is CVE-2021-42644?: Medium severity. CVSS v3 base score is 6.5 out of 10.