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    CVE-2026-26133

    AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.

    Published:Mar 13, 2026
    Last Modified:Apr 14, 2026
    EPS:Mar 13, 2026
    EPSS Score:0.00058
    CVSS Score:7.1

    Affected Products

    Vendor
    Microsoft
    Product
    365 Copilot
    Vendor
    Microsoft
    Product
    365 Copilot Android
    Vendor
    Microsoft
    Product
    365 Copilot For Android
    Vendor
    Microsoft
    Product
    365 Copilot For Ios
    Vendor
    Microsoft
    Product
    365 Copilot IOS
    Vendor
    Microsoft
    Product
    Edge
    Vendor
    Microsoft
    Product
    Edge For Android
    Vendor
    Microsoft
    Product
    Edge For Ios
    Vendor
    Microsoft
    Product
    Excel
    Vendor
    Microsoft
    Product
    Excel For Android
    Vendor
    Microsoft
    Product
    Excel For Ios
    Vendor
    Microsoft
    Product
    Loop
    Vendor
    Microsoft
    Product
    Loop For Ios
    Vendor
    Microsoft
    Product
    Onenote
    Vendor
    Microsoft
    Product
    Onenote For Android
    Vendor
    Microsoft
    Product
    Onenote For Ios
    Vendor
    Microsoft
    Product
    Outlook
    Vendor
    Microsoft
    Product
    Outlook 2016
    Vendor
    Microsoft
    Product
    Outlook For Android
    Vendor
    Microsoft
    Product
    Outlook For Ios
    Vendor
    Microsoft
    Product
    Outlook For Mac
    Vendor
    Microsoft
    Product
    Power Bi
    Vendor
    Microsoft
    Product
    Power Bi Android
    Vendor
    Microsoft
    Product
    Power Bi IOS
    Vendor
    Microsoft
    Product
    Powerbi For Android
    Vendor
    Microsoft
    Product
    Powerbi For Ios
    Vendor
    Microsoft
    Product
    Powerpoint
    Vendor
    Microsoft
    Product
    Powerpoint For Android
    Vendor
    Microsoft
    Product
    Powerpoint For Ios
    Vendor
    Microsoft
    Product
    Teams
    Vendor
    Microsoft
    Product
    Teams For Android
    Vendor
    Microsoft
    Product
    Teams For Ios
    Vendor
    Microsoft
    Product
    Word
    Vendor
    Microsoft
    Product
    Word For Android
    Vendor
    Microsoft
    Product
    Word For Ios

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-50517 (CVSS 9.9) — Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network…
    CVE-2026-41106 (CVSS 9.3) — Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate…
    CVE-2026-47645 (CVSS 8.8) — Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unautho…
    CVE-2026-42895 (CVSS 6.5) — Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allow…
    CVE-2026-54130 (CVSS 9.8) — Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose infor…
    CVE-2026-45497 (CVSS 7.7) — Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allow…
    CVE-2026-42824 (CVSS 6.5) — Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an …
    CVE-2026-41090 (CVSS 9.3) — Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allow…
    CVE-2026-42827 (CVSS 6.5) — Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an …
    CVE-2026-42831 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High