Arbitrary file upload in Crmeb

CVE-2020-21787

CRMEB 3.1.0+ is vulnerable to File Upload Getshell via /crmeb/crmeb/services/UploadService.php.

Vulnerability class: Unrestricted File Upload

Published · last modified .

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: 0.018 (78.2th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-21787: held from 0.018 to 0.018.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

  • Crmeb — versions 3.1.0\+, 3.1.0+

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-21787?
CVE-2020-21787 is a critical-severity vulnerability in Crmeb, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-06-24.
How severe is CVE-2020-21787?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-21787 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.