Developing a Plan to Respond to Critical CVEs in Open Source Software

This advisory summarizes recent major supply-chain and vulnerability-driven incidents (SolarWinds, Log4j, XZ Utils backdoor, and Kaseya/REvil), highlights the widespread risk posed by unmanaged open-source and transitive dependencies, and recommends operational controls—comprehensive asset inventories, SBOMs, software composition analysis, developer security training, and clear CVE escalation and remediation processes—to improve detection, triage, and response.