The More You Know, The More You Know You Don’t Know
Summary: Google Project Zero recorded 58 in-the-wild 0-days detected and disclosed in 2021, the most since it began tracking in mid-2014 and more than double the prior maximum of 28 in 2015, up from 25 in 2020. Project Zero attributes the rise mainly to increased detection and disclosure rather than more 0-day usage, noting 39 of the 58 (67%) were memory corruption bugs and only two exploits stood out as novel.
What's compelling: Project Zero states that if Apple and Google Android had not begun annotating their security advisories, the public would likely not know about at least 7 Apple and 5 Android in-the-wild 0-days reported by anonymous researchers - 12 that would have gone uncounted, leaving open how many detected 0-days vendors never label publicly.
Read the original at Google Project Zero ↗
- Topics
- Vulnerabilities & Patching
- Related
- Attackers Exploit UnrealIRCd Flaw That Enables Server-Level Command Injection Cyber Risks · Nov 14, 2026U.S. CISA adds Check Point and UnrealIRCd flaws to its Known Exploited Vulnerabilities catalog Cyber Risks · Nov 14, 2026PostgreSQL Patches 52 Flaws, Including 22-Year-Old Bug Enabling Authenticated RCE Cyber Risks · Nov 13, 2026