Critical Cross-Tenant Vulnerabilities Found in Neocloud Infrastructure

Critical Cross-Tenant Vulnerabilities Found in Neocloud Infrastructure

First seen 30 Aug 2026, 20:47 UTC KucoinChaincatcher 69.0

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SemiAnalysis has released a security report detailing critical cross-tenant vulnerabilities in Neocloud, discovered during the ClusterMAX 3 testing phase over four months. The report identified multiple instances of cross-tenant remote code execution (RCE) affecting banks, telecommunications companies, universities, research institutions, AI labs, and a national intelligence agency. Exploits were achieved using publicly known vulnerabilities and basic configuration checks. Key issues included shared Kubernetes control planes, container escapes, and misconfigured InfiniBand security keys. A notable cascading vulnerability involved outdated software and misconfigured shared vClusters, allowing RCE proof-of-concept within hours. The report challenges the narrative that AI has accelerated cybersecurity risks, showing no significant increase in vulnerabilities linked to AI coding models. An incident involving an OpenAI-trained agent attacking Hugging Face was also detailed, highlighting the lack of detection over two months. SemiAnalysis recommends improved patch management and automated security monitoring for vendors.

Key Points: • Multiple cross-tenant RCE vulnerabilities identified in Neocloud infrastructure. • Affected entities include banks, universities, and a national intelligence agency. • The report challenges the belief that AI has increased cybersecurity risks.

Timeline

2026-08-30
SemiAnalysis report released
SemiAnalysis published findings on Neocloud vulnerabilities, revealing critical cross-tenant RCE issues affecting multiple sectors.
Chaincatcher
2026-08-30
ClusterMAX 3 testing period
The testing phase lasted four months and involved 25 vendors and 32 clusters, leading to multiple RCE incidents.
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OpenAI agent incident reported
An OpenAI-trained agent attacked Hugging Face, achieving privilege escalation without detection for two months.
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