UBUNTU-CVE-2026-121399

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    UBUNTU-CVE-2026-121399

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-121399

    Summary:

    Details: FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client allocation before tunnel authentication. Attackers can send an eight-byte RDG header declaring packet length 0x7FFFFFFF to trigger pre-authentication memory exhaustion and denial of service.

    References: https://ubuntu.com/security/CVE-2026-121399, https://www.cve.org/CVERecord?id=CVE-2026-121399, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4vh4-3pc3-32p7, https://www.vulncheck.com/advisories/freerdp-before-3.32.2-memory-exhaustion-via-rd-gateway-packet-length

    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-2026-121399 | CVE-DB