CVE-2023-40186

    Dashboard / Vulnerabilities / CVE-2023-40186

    CVE-2023-40186

    Published: 31 Aug 2023Last Modified: 12 Aug 2026

    Summary: IntegerOverflow leading to Out-Of-Bound Write Vulnerability in FreeRDP

    Details: FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an IntegerOverflow leading to Out-Of-Bound Write Vulnerability in the `gdi_CreateSurface` function. This issue affects FreeRDP based clients only. FreeRDP proxies are not affected as image decoding is not done by a proxy. 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.

    References: https://github.com/FreeRDP/FreeRDP/blob/fee2b10ba1154f952769a53eb608f044782e22f8/libfreerdp/gdi/gfx.c#L1156-L1165, 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://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40186.json, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hcj4-3c3r-5j3v, https://nvd.nist.gov/vuln/detail/CVE-2023-40186, https://security.gentoo.org/glsa/202401-16

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1384b3c33b9bd7599633cc54bf20cf20ec6be83c

    Affected versions

    3.0.0-beta1
    3.0.0-beta2

    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
    CVE-2023-40186 | CVE-DB