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    10 vulnerabilities found for Microsoft Exchange Online by Microsoft

    CVE-2026-56191 (GCVE-0-2026-56191)

    Vulnerability from nvd – Published: 2026-07-24 00:01 – Updated: 2026-08-07 18:22 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Tampering Vulnerability
    Summary
    Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.
    Severity
    10 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Date Public
    2026-07-23 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-54998 (GCVE-0-2026-54998)

    Vulnerability from nvd – Published: 2026-07-02 22:18 – Updated: 2026-08-07 18:15 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Elevation of Privilege Vulnerability
    Summary
    Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
    Severity
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Date Public
    2026-07-02 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-48582 (GCVE-0-2026-48582)

    Vulnerability from nvd – Published: 2026-06-19 20:29 – Updated: 2026-07-28 22:20 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Elevation of Privilege Vulnerability
    Summary
    Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
    Severity
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Date Public
    2026-06-18 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-48579 (GCVE-0-2026-48579)

    Vulnerability from nvd – Published: 2026-06-04 22:00 – Updated: 2026-07-28 22:20 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Information Disclosure Vulnerability
    Summary
    Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Date Public
    2026-06-04 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-26137 (GCVE-0-2026-26137)

    Vulnerability from nvd – Published: 2026-03-19 21:06 – Updated: 2026-06-19 18:18 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Elevation of Privilege Vulnerability
    Summary
    Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.
    Severity
    9.9 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Date Public
    2026-03-19 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-56191 (GCVE-0-2026-56191)

    Vulnerability from cvelistv5 – Published: 2026-07-24 00:01 – Updated: 2026-08-07 18:22 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Tampering Vulnerability
    Summary
    Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.
    Severity
    10 (Critical)
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    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Date Public
    2026-07-23 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-54998 (GCVE-0-2026-54998)

    Vulnerability from cvelistv5 – Published: 2026-07-02 22:18 – Updated: 2026-08-07 18:15 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Elevation of Privilege Vulnerability
    Summary
    Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
    Severity
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Date Public
    2026-07-02 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-48582 (GCVE-0-2026-48582)

    Vulnerability from cvelistv5 – Published: 2026-06-19 20:29 – Updated: 2026-07-28 22:20 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Elevation of Privilege Vulnerability
    Summary
    Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
    Severity
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Date Public
    2026-06-18 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-48579 (GCVE-0-2026-48579)

    Vulnerability from cvelistv5 – Published: 2026-06-04 22:00 – Updated: 2026-07-28 22:20 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Online Information Disclosure Vulnerability
    Summary
    Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Date Public
    2026-06-04 14:00
    Show details on NVD website
    To clipboard 

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    CVE-2026-26137 (GCVE-0-2026-26137)

    Vulnerability from cvelistv5 – Published: 2026-03-19 21:06 – Updated: 2026-06-19 18:18 Exclusively Hosted Service
    VLAI
    Title
    Microsoft Exchange Elevation of Privilege Vulnerability
    Summary
    Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.
    Severity
    9.9 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L/E:U/RL:O/RC:C
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Date Public
    2026-03-19 14:00
    Show details on NVD website
    To clipboard 

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