CVE-2026-41090criticalCWE-77

CVE-2026-41090: critical vulnerability in Microsoft 365 Copilot for iOS

Microsoft Copilot Tampering Vulnerability

Published · Updated

Follow this CVE+ Monitor Microsoft 365 Copilot

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3epss 0.4%
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft 365 Copilot for iOS
Related CVEs — Microsoft 365 Copilot for iOS

In the same product, most dangerous first.

CVE-2026-58617HIGHM365 Copilot for iOS Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-26133HIGHM365 Copilot Information Disclosure VulnerabilityEPSS 0.5%