CVE-2021-42645

10.0 criticalEPSS 4.8%

Critical (10.0) in cmsimple-xh cmsimple xh. EPSS 4.8% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 4.8% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2022-05-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cmsimple-xh:cmsimple_xh

References

https://github.com/Net-hunter121/CMSimple_XH-Unauth-RCE
https://github.com/cmsimple-xh/cmsimple-xh/releases/tag/1.7.5
https://github.com/Net-hunter121/CMSimple_XH-Unauth-RCE
https://github.com/cmsimple-xh/cmsimple-xh/releases/tag/1.7.5

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