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    CVE-2026-70571

    Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

    Published:Oct 13, 2026
    Last Modified:Oct 13, 2026
    EPS:Oct 13, 2026
    EPSS Score:
    CVSS Score:8.1

    Affected Products

    Vendor
    Microsoft
    Product
    Exchange Server 2016
    Vendor
    Microsoft
    Product
    Exchange Server 2019
    Vendor
    Microsoft
    Product
    Exchange Server Se

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-121 Stack-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-87696 (CVSS 7.5) — Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to…
    CVE-2026-87695 (CVSS 7.8) — Inclusion of functionality from untrusted control sphere in Microsoft Exchange Server allows an authorized att…
    CVE-2026-87692 (CVSS 7.8) — Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privil…
    CVE-2026-77910 (CVSS 8.8) — Incorrect authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over …
    CVE-2026-70279 (CVSS 9.3) — Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Ser…
    CVE-2026-96940 (CVSS 8.8) — Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a ne…
    CVE-2026-69641 (CVSS 9.1) — Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a …
    CVE-2026-69382 (CVSS 5.9) — Use of a broken or risky cryptographic algorithm in Microsoft Exchange Server allows an unauthorized attacker …
    CVE-2026-69380 (CVSS 8.1) — Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a …
    CVE-2026-69378 (CVSS 7.5) — Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a net…

    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