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vulnerabilities1 source · 2h ago

Microsoft Copilot for Word Can Copy Hidden Prompts Into New Documents

Håkon Måløy disclosed a persistent prompt injection vulnerability in Microsoft 365 Copilot for Word where hidden instructions propagate across document generations despite Microsoft's mitigations.

Affected◉ United States▪ Microsoft▪ Microsoft 365 Copilot▪ Word◇ Håkon Måløy
⌗ 1 outlet · 1 origin · Balanced
India × 1

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Sources (1)

Microsoft Copilot for Word Can Copy Hidden Prompts Into New Documents — Prism