---
title: Cyber Threat Intelligence Report – December 2025
description: Explore the December 2025 Cyber Threat Intelligence Report with insights on ransomware, stealer malware, exploited vulnerabilities, and global cybercrime enforcement actions.
---

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December 2025

# Cyber Threat Intelligence Report

## Ransomware Evolution, Stealer Proliferation, and Global Enforcement Actions

The December 2025 Cyber Threat Intelligence Report delivers actionable intelligence on the most consequential threats observed across the global threat landscape. The December 2025 report covers active exploitation, emerging ransomware frameworks, advanced information stealers, and coordinated law-enforcement disruption efforts, equipping security teams with tips to detect, respond, and mitigate risk before operational impact occurs.

 

### What’s Inside the Report

- **Vulnerability Spotlight – CVE-2025-55182 (React2Shell)**  
  A critical pre-authentication RCE affecting React Server Components, actively exploited in the wild and linked to advanced threat actor infrastructure. Includes exploitation mechanics, affected frameworks, and mitigation guidance.
- **Monthly High-Risk Vulnerability Review**  
  A prioritized review of the most severe vulnerabilities exploited or weaponized in December, including FortiOS, FortiWeb, HPE OneView, IBM API Connect, Adobe ColdFusion, Ivanti Endpoint Manager, Chrome V8, and QNAP OS.
- **Ransomware Threat Analysis**  
  In-depth analysis of emerging ransomware operations including ShinySp1d3r and Rusty Lockbox, mapping behaviors to MITRE ATT&CK and identifying defensive control points.
- **Stealer Malware Activity**  
  Detailed breakdown of XaXa Stealer, covering browser credential theft, Discord token exfiltration, webhook-based command-and-control, and sandbox evasion techniques.
- **Global Ransomware and Incident Trends**  
  December recorded 802 ransomware victims, with manufacturing as the most targeted sector and the United States as the most impacted country.
- **Cyber Crime Update: Operation Sentinel**  
  Analysis of coordinated law enforcement action across 19 African countries, resulting in 574 arrests, 6,000+ malicious links removed, and multiple ransomware variants disrupted.

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