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criticalOSINT Alert
CVE-2026-5757

VU#518910: Ollama GGUF Quantization Remote Memory Leak

Overview Ollama’s model quantization engine contains a vulnerability that allows an attacker with access to the model upload interface to read and potentially exfiltrate heap memory from the server. This issue may lead to unintended behavior, including unauthorized access to sensitive data and, in some cases, broader system compromise. Description Ollama is an open-source tool designed to run large language models (LLMs) locally on personal systems, including macOS, Windows, and Linux. Ollama su

Wednesday, April 22, 2026LinuxVulnios Threat Intelligence
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Executive Summary

Overview Ollama’s model quantization engine contains a vulnerability that allows an attacker with access to the model upload interface to read and potentially exfiltrate heap memory from the server. This issue may lead to unintended behavior, including unauthorized access to sensitive data and, in some cases, broader system compromise. Description Ollama is an open-source tool designed to run large language models (LLMs) locally on personal systems, including macOS, Windows, and Linux. Ollama su

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