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    CVE-2026-56297

    FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service.

    Published:Jul 8, 2026
    Last Modified:Jul 9, 2026
    EPS:Jul 8, 2026
    EPSS Score:0.00262
    CVSS Score:7

    Affected Products

    Vendor
    Freerdp
    Product
    Freerdp

    Exploits

    https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mv2-5q57-2v8hhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mv2-5q57-2v8h

    Related CVEs

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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