Lessons From 2025: Zero-Day Exploitation Shaping 2026
Zero-day exploits were among the defining cyber threats of 2025, with high-severity flaws affecting platforms such as React2Shell, Oracle E-Business Suite (EBS), and CitrixBleed 2 highlighting how quickly zero-days can be weaponized and how damaging they can be. To help organizations understand the zero-day threat landscape, Outpost24’s threat intelligence team has compiled a review of the vulnerabilities they encountered in the wild throughout 2025.