Unpatched flaws turn Ollama’s auto-updater into a persistent RCE vector, researchers say

Researchers at Striga have disclosed two vulnerabilities (CVE-2026-42248, CVE-2026-42249) in Ollama’s Windows auto-updater that, when chained together, may allow an attacker to covertly plant a persistent executable that runs on every login. CVE-2026-42248 and CVE-2026-42249 Ollama is an open-source tool for running large language models locally. It’s is used by those who don’t want their data to leave their machine and don’t want to be constrained by API costs, usage limits, or the requirement