Most vulnerability and EASM tools rely on CVE feeds: NVD, vendor advisories, and threat intel that references published CVEs. That's essential, but it's also reactive. By the time a CVE is assigned and published, attackers may have been exploiting the issue for days or weeks.
The gap
Maintainers often publish security releases and patch notes on GitHub (or elsewhere) before a CVE is assigned. Exploit-DB and other sources list new exploits that may not yet have a CVE. If your tooling only reacts to CVEs, you're always behind.
Asset-specific correlation
Generic threat feeds also create alert fatigue: you get notified about every new WordPress CVE even if you don't run WordPress. We only correlate threats with technologies we actually detect on your attack surface. So you see pre-CVE signals only for what you run—dramatically fewer false positives.
Bottom line
CVE-only detection is necessary but not sufficient. Adding upstream monitoring (GitHub, Exploit-DB) and asset-specific correlation gives you earlier visibility and actionable alerts.