500,000 Vulnerabilities, 14 That Matter: How Exploit Chain Analysis Cuts Through the Noise

The report explains that although thousands of CVEs are published yearly, only a small fraction are confirmed exploited; however, when a renderer remote code execution and an OS-level sandbox escape exist on the same endpoint they can chain into a zero-click full-host compromise. It further contrasts Chrome’s V8 heap sandbox—which typically forces a three-vulnerability chain to reach the OS—with Firefox’s SpiderMonkey, where a two-stage chain (renderer RCE + sandbox escape) is often sufficient, and argues that scanners that treat each CVE independently miss this compounded risk.