CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.2. See the original NVD description below for full technical details.
CVE
CVE-2021-21708
Severity
HIGH
CVSS
8.2
EPSS
3.00%
Original NVD Description
In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.
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