CVE-2021-42645
10.0 · CRITICALOverview
CVE-2021-42645 is a critical-severity vulnerability affecting cmsimple-xh cmsimple_xh. It was published on May 10, 2022 and has a CVSS 3.1 base score of 10.0 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from cmsimple-xh. Update cmsimple_xh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2021-42645?
CVE-2021-42645 is a critical-severity vulnerability affecting cmsimple-xh cmsimple_xh. It was published on May 10, 2022 and has a CVSS 3.1 base score of 10.0 (CRITICAL).
How severe is CVE-2021-42645?
This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-42645?
Check the references section for vendor advisories and patches from cmsimple-xh. Update cmsimple_xh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-42645?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-42645 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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