CVE Feed

    Dashboard / CVE / CVE-2026-55009

    CVE-2026-55009

    Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

    Published:Jul 14, 2026
    Last Modified:Jul 14, 2026
    EPS:Jul 14, 2026
    EPSS Score:
    CVSS Score:7.8

    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 Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

    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…
    CVE-2026-69375 (CVSS 6.5) — Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to…
    CVE-2026-69361 (CVSS 6.5) — Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoof…
    CVE-2026-69356 (CVSS 9.3) — Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Ser…
    CVE-2026-69355 (CVSS 8.8) — External control of file name or path in Microsoft Exchange Server allows an authorized attacker to execute co…
    CVE-2026-62911 (CVSS 8) — Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate …
    CVE-2026-65813 (CVSS 6.5) — Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privi…

    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