Methodologies
VEX: filtering vulnerability noise with context
VEX, the Vulnerability Exploitability eXchange, is a structured way for a vendor to state whether a CVE listed in an SBOM actually affects a product. Log4Shell in December 2021 showed why it exists: countless Java applications carried that critical CVE while never loading the vulnerable class. VEX marks which vulnerabilities are not exploitable, so scanner noise becomes signal.