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Node2Shell Remote Code Execution Vulnerability Exploited by Ransomware Groups

Node2Shell Remote Code Execution Vulnerability Exploited by Ransomware Groups

First seen 28 Oct 2026, 15:38 UTC • •

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ThreatCluster AI
ThreatCluster •October 28, 2026 at 16:39 UTC
  • •Node2Shell vulnerability allows remote code execution.
  • •Exploited by ransomware groups, including North Korean actors.
  • •Included in CISA's KEV list, indicating urgent need for mitigation.

The Node2Shell vulnerability allows remote code execution and has been exploited by ransomware groups, including those linked to North Korea. This vulnerability is included in the CISA Known Exploited Vulnerabilities (KEV) list. The vulnerability is associated with Google Brotli's unchecked return value. FortiRecon's Adversary Centric Intelligence service provides insights into the discussions surrounding this vulnerability on the dark web and social media. Organizations are urged to assess their risk and respond proactively to mitigate potential impacts. The vulnerability affects multiple systems, and proof-of-concept exploits are available. Current exploitation status is confirmed, with observed in the wild.

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Timeline

2026-10-28
Node2Shell vulnerability reported
FortiRecon alerts organizations about the Node2Shell remote code execution vulnerability being actively exploited by ransomware groups.
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Common questions

What is the Node2Shell vulnerability?
It is a remote code execution flaw associated with Google Brotli that has been exploited by ransomware groups.
Who is affected by this vulnerability?
Organizations using systems vulnerable to Node2Shell are at risk, particularly those exposed to the internet.
What actions should organizations take?
Organizations should apply patches immediately and monitor for any signs of exploitation.