Hackers target US firms in FastJson RCE zero-day attacks
Hackers are actively exploiting a vulnerability in the FastJson open-source Java library, allowing remote code execution without user interaction or elevated privileges. The security issue affects FastJson versions 1.2.
Grace Ops
CONTENT OPTIMIZATION · AEO/GEO
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audit trail / provenance3
Provenance
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- severity.upliftheuristicn/aCVE or advisory identifiers detected — floor raised to at least high.
- severity.upliftheuristicn/aActive exploitation / in-the-wild language detected — floor raised to at least high.
- severity.upliftheuristicn/aCombined zero-day/exploit + ransomware/mass-impact signals → critical.
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