CRITICALZero Day
Global

Hackers target US firms in FastJson RCE zero-day attacks

·Source: BleepingComputer

Updated:

Executive Summary

Hackers are actively exploiting a vulnerability in the FastJson open-source Java library, allowing remote code execution without user interaction or elevated privileges. [...]

Analysis

Hackers are actively exploiting a vulnerability in the FastJson open-source Java library, allowing remote code execution without user interaction or elevated privileges. [...]
Source Attribution

Originally published by BleepingComputer on Jul 27, 2026.

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