CVE-2021-47964
Published: 15 May 2026
Summary
CVE-2021-47964 is a high-severity Code Injection (CWE-94) vulnerability in Schlix CMS (inferred from references). Its CVSS base score is 8.8 (High).
Operationally, ranked at the 47.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.
NVD Description
Schlix CMS 2.2.6-6 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary PHP code by uploading malicious extension packages through the block manager. Attackers can upload a crafted ZIP file containing PHP code in the packageinfo.inc…
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file and trigger execution by accessing the About tab of the installed extension.
Deeper analysisAI
Automated synthesis unavailable for this CVE.
Details
- CWE(s)