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    CVE-2026-77481

    Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

    Published:Sep 8, 2026
    Last Modified:Sep 9, 2026
    EPS:Sep 8, 2026
    EPSS Score:0.00617
    CVSS Score:8.8

    Affected Products

    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2017 (cu 31)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2017 (gdr)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2019 (cu 32)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2019 (gdr)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2022 (cu 26)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2022 (gdr)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2025 (cu8)
    Vendor
    Microsoft
    Product
    Microsoft Sql Server 2025 For X64-based Systems (gdr)
    Vendor
    Microsoft
    Product
    Sql Server 2017
    Vendor
    Microsoft
    Product
    Sql Server 2019
    Vendor
    Microsoft
    Product
    Sql Server 2022
    Vendor
    Microsoft
    Product
    Sql Server 2025

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-122 Heap-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    CVE-2026-68779 (CVSS 6.5) — Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network.…
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    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