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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-21527

CVE-2026-21527: 1 tracked advisory record across MS Server. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

MS Server

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-21527] Microsoft Exchange Server Spoofing Vulnerability

    CVE-2026-21527Source published Source updated

    User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server Subscription Edition RTM.

    Affected products in this advisory
    • Microsoft Exchange Server 2016 Cumulative Update 23
    • Microsoft Exchange Server 2019 Cumulative Update 14
    • Microsoft Exchange Server 2019 Cumulative Update 15
    • Microsoft Exchange Server Subscription Edition RTM
    Source-reported affected versions
    • Microsoft Exchange Server 2016 Cumulative Update 23 15.01.0.0 before 15.01.2507.066
    • Microsoft Exchange Server 2019 Cumulative Update 14 15.02.0.0 before 15.02.1544.039
    • Microsoft Exchange Server 2019 Cumulative Update 15 15.02.0.0 before 15.02.1748.043
    • Microsoft Exchange Server Subscription Edition RTM 15.02.0.0 before 15.02.2562.037
    Source-reported fixed versions
    • 15.01.2507.066
    • 15.02.1544.039
    • 15.02.1748.043
    • 15.02.2562.037
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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