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    CVE-2023-40188

    FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `general_LumaToYUV444` function. This Out-Of-Bounds Read occurs because processing is done on the `in` variable without checking if it contains data of sufficient length. Insufficient data for the `in` variable may cause errors or crashes. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

    Published:Aug 31, 2023
    Last Modified:Nov 3, 2025
    EPS:Aug 31, 2023
    EPSS Score:0.00051
    CVSS Score:5.3

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Freerdp
    Product
    Freerdp
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9w28-wwj5-p4xqhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9w28-wwj5-p4xq

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    References

    https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/nsc.c#L115-L175
    https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9w28-wwj5-p4xq
    https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/
    https://security.gentoo.org/glsa/202401-16
    https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/nsc.c#L115-L175
    https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9w28-wwj5-p4xq
    https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
    https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/
    https://security.gentoo.org/glsa/202401-16

    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