Microsoft Copilot Chat vulnerabilities

2 CVEs affecting Microsoft Copilot Chat, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-47644, published 2026-06-04.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2026-33111, published 2026-05-07. High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days. Improper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.
• CVE-2026-47644, published 2026-06-04. High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days. Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a…