UBUNTU-CVE-2026-121406

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    UBUNTU-CVE-2026-121406

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-121406

    Summary:

    Details: FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passes the resulting null output pointer to Stream_StaticConstInit. A malicious RDP server can send a zero-output ZGFX payload on the RDPGFX channel after session activation to terminate the client.

    References: https://ubuntu.com/security/CVE-2026-121406, https://www.cve.org/CVERecord?id=CVE-2026-121406, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2c9x-4gr7-hrwx, https://www.vulncheck.com/advisories/freerdp-before-3.32.2-client-denial-of-service-via-zero-output-zgfx-payload

    Affected packages

    Package

    Name: freerdp

    Purl: pkg:deb/ubuntu/freerdp?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1
    1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2
    1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3
    1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4

    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
    UBUNTU-CVE-2026-121406 | CVE-DB