CVE-2021-42645 is a critical remote code execution (RCE) vulnerability affecting CMSimple_XH version 1.7.4. An unauthenticated attacker can exploit this by uploading a malicious PHP payload via the "File" parameter to gain a reverse shell, leading to complete system compromise. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with no user interaction required, resulting in high impact to confidentiality, integrity, and availability. Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog, nor is there any community discussion or media coverage indicating active exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.7.4CPE matchmatch criteria | cpe:2.3:a:cmsimple-xh:cmsimple_xh:1.7.4:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.