Arbitrary file upload in Cmsimple-Xh Cmsimple Xh
CVE-2021-42645
CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the "File" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.045 (91.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000
Affected products
- Cmsimple-Xh Cmsimple Xh — versions 1.7.4
Weakness classification (CWE)
References
- github.com/Net-hunter121/CMSimple_XH-Unauth-RCE (Exploit, Third Party Advisory)
- github.com/cmsimple-xh/cmsimple-xh/releases/tag/1.7.5 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-42645?
- CVE-2021-42645 is a critical-severity vulnerability in Cmsimple-Xh Cmsimple Xh, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2022-05-10.
- How severe is CVE-2021-42645?
- Critical severity. CVSS v3 base score is 10.0 out of 10.