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Highest advisory severityHigh Exploited CISA KEV 1 vendor · 1 advisory

CVE-2021-42321

CVE-2021-42321: 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.

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Vendor advisory comparison

MS Server

1 advisory
  • Advisory severityHigh8.8

    High [CVE-2021-42321] Microsoft Exchange Server Remote Code Execution Vulnerability

    CVE-2021-42321Source published Source updated

    Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 21; Microsoft Exchange Server 2016 Cumulative Update 22; Microsoft Exchange Server 2019 Cumulative Update 10; Microsoft Exchange Server 2019 Cumulative Update 11.

    Affected products in this advisory
    • Microsoft Exchange Server 2016 Cumulative Update 21
    • Microsoft Exchange Server 2016 Cumulative Update 22
    • Microsoft Exchange Server 2019 Cumulative Update 10
    • Microsoft Exchange Server 2019 Cumulative Update 11
    Source-reported affected versions
    • Microsoft Exchange Server 2016 Cumulative Update 21 15.01.0 before 15.01.2308.020
    • Microsoft Exchange Server 2016 Cumulative Update 22 15.0.0 before 15.01.2375.017
    • Microsoft Exchange Server 2019 Cumulative Update 10 15.02.0 before 15.02.0792.019
    • Microsoft Exchange Server 2019 Cumulative Update 11 15.02.0 before 15.02.0986.014
    Source-reported fixed versions
    • 15.01.2308.020
    • 15.01.2375.017
    • 15.02.0792.019
    • 15.02.0986.014
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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