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Highest advisory severityHigh Exploited CISA KEV 1 vendor · 1 advisory

CVE-2021-33766

CVE-2021-33766: 1 tracked advisory record across MS Server. CISA KEV listed; exploitation observed. 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.

NVD detail CVE.org

Vendor advisory comparison

MS Server

1 advisory
  • Advisory severityHigh7.3

    High [CVE-2021-33766] Microsoft Exchange Server Information Disclosure Vulnerability

    CVE-2021-33766Source published Source updated

    Microsoft Exchange Server Information Disclosure Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2013 Cumulative Update 23; Microsoft Exchange Server 2016 Cumulative Update 19; Microsoft Exchange Server 2016 Cumulative Update 20; Microsoft Exchange Server 2019 Cumulative Update 8; and 1 more. Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 9.

    Affected products in this advisory
    • Microsoft Exchange Server 2013 Cumulative Update 23
    • Microsoft Exchange Server 2016 Cumulative Update 19
    • Microsoft Exchange Server 2016 Cumulative Update 20
    • Microsoft Exchange Server 2019 Cumulative Update 8

    1 more entries in the full advisory.

    Source-reported affected versions
    • Microsoft Exchange Server 2013 Cumulative Update 23 15.00.0 before 15.00.1497.015
    • Microsoft Exchange Server 2016 Cumulative Update 19 15.01.0 before 15.01.2176.012
    • Microsoft Exchange Server 2016 Cumulative Update 20 15.01.0 before 15.01.2242.008
    • Microsoft Exchange Server 2019 Cumulative Update 8 15.02.0 before 15.02.0792.013

    1 more entries in the full advisory.

    Source-reported fixed versions
    • 15.00.1497.015
    • 15.01.2176.012
    • 15.01.2242.008
    • 15.02.0792.013

    1 more entries in the full advisory.

    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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