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This article details "SearchLeak," a critical vulnerability chain in Microsoft 365 Copilot that weaponizes AI-specific prompt injection and SSRF flaws to exfiltrate enterprise data. The exploit demonstrates how integrating generative AI into productivity suites introduces unique attack vectors where user queries are interpreted as executable instructions, bypassing traditional security controls. For the industry, this highlights the urgent need for robust guardrails in production-grade LLMs that can distinguish between natural language search and malicious command execution within trusted domains.
Critical Microsoft 365 Copilot Vulnerability Allows Attackers to Steal Data in One Click
A critical vulnerability chain in Microsoft 365 Copilot Enterprise that let attackers steal sensitive corporate data, MFA codes, email contents, calendar details, and confidential files with nothing more than a single click on a link pointing to a legitimate Microsoft domain. Dubbed SearchLeak, uncovered by Varonis Threat Labs and tracked as CVE-2026-42824, the flaw earned […] The post Critical Microsoft 365 Copilot Vulnerability Allows Attackers to Steal Data in One Click appeared first on Cyber Security News.
A critical vulnerability chain in Microsoft 365 Copilot Enterprise that let attackers steal sensitive corporate data, MFA codes, email contents, calendar details, and confidential files with nothing more than a single click on a link pointing to a legitimate Microsoft domain. Dubbed SearchLeak, uncovered by Varonis Threat Labs and tracked as CVE-2026-42824, the flaw earned Microsoft’s maximum severity rating before…
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