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    CVE-2018-14665

    A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.

    Published:Oct 25, 2018
    Last Modified:Aug 29, 2025
    EPS:Oct 25, 2018
    EPSS Score:0.04413
    CVSS Score:6.6

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    X.org
    Product
    X Server

    Exploits

    https://www.exploit-db.com/exploits/45697/https://www.exploit-db.com/exploits/45742/https://www.exploit-db.com/exploits/45832/https://www.exploit-db.com/exploits/45908/https://www.exploit-db.com/exploits/45922/https://www.exploit-db.com/exploits/45938/https://www.exploit-db.com/exploits/46142/https://www.securepatterns.com/2018/10/cve-2018-14665-xorg-x-server.htmlhttps://www.exploit-db.com/exploits/45697/https://www.exploit-db.com/exploits/45742/https://www.exploit-db.com/exploits/45832/https://www.exploit-db.com/exploits/45908/https://www.exploit-db.com/exploits/45922/https://www.exploit-db.com/exploits/45938/https://www.exploit-db.com/exploits/46142/https://www.securepatterns.com/2018/10/cve-2018-14665-xorg-x-server.htmlhttps://www.exploit-db.com/exploits/45938https://github.com/bolonobolo/CVE-2018-14665https://github.com/jas502n/CVE-2018-14665https://www.exploit-db.com/exploits/45697https://www.exploit-db.com/exploits/45742https://www.exploit-db.com/exploits/45832https://www.exploit-db.com/exploits/45908https://www.exploit-db.com/exploits/45922https://www.exploit-db.com/exploits/46142https://www.exploit-db.com/exploits/47701

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://packetstormsecurity.com/files/154942/Xorg-X11-Server-SUID-modulepath-Privilege-Escalation.html
    http://packetstormsecurity.com/files/155276/Xorg-X11-Server-Local-Privilege-Escalation.html
    http://www.securityfocus.com/bid/105741
    http://www.securitytracker.com/id/1041948
    https://access.redhat.com/errata/RHSA-2018:3410
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14665
    https://gitlab.freedesktop.org/xorg/xserver/commit/50c0cf885a6e91c0ea71fb49fa8f1b7c86fe330e
    https://gitlab.freedesktop.org/xorg/xserver/commit/8a59e3b7dbb30532a7c3769c555e00d7c4301170
    https://lists.x.org/archives/xorg-announce/2018-October/002927.html
    https://security.gentoo.org/glsa/201810-09
    https://usn.ubuntu.com/3802-1/
    https://www.debian.org/security/2018/dsa-4328
    https://www.exploit-db.com/exploits/45697/
    https://www.exploit-db.com/exploits/45742/
    https://www.exploit-db.com/exploits/45832/
    https://www.exploit-db.com/exploits/45908/
    https://www.exploit-db.com/exploits/45922/
    https://www.exploit-db.com/exploits/45938/
    https://www.exploit-db.com/exploits/46142/
    https://www.securepatterns.com/2018/10/cve-2018-14665-xorg-x-server.html
    http://packetstormsecurity.com/files/154942/Xorg-X11-Server-SUID-modulepath-Privilege-Escalation.html
    http://packetstormsecurity.com/files/155276/Xorg-X11-Server-Local-Privilege-Escalation.html
    http://www.securityfocus.com/bid/105741
    http://www.securitytracker.com/id/1041948
    https://access.redhat.com/errata/RHSA-2018:3410
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14665
    https://gitlab.freedesktop.org/xorg/xserver/commit/50c0cf885a6e91c0ea71fb49fa8f1b7c86fe330e
    https://gitlab.freedesktop.org/xorg/xserver/commit/8a59e3b7dbb30532a7c3769c555e00d7c4301170
    https://lists.x.org/archives/xorg-announce/2018-October/002927.html
    https://security.gentoo.org/glsa/201810-09
    https://usn.ubuntu.com/3802-1/
    https://www.debian.org/security/2018/dsa-4328
    https://www.exploit-db.com/exploits/45697/
    https://www.exploit-db.com/exploits/45742/
    https://www.exploit-db.com/exploits/45832/
    https://www.exploit-db.com/exploits/45908/
    https://www.exploit-db.com/exploits/45922/
    https://www.exploit-db.com/exploits/45938/
    https://www.exploit-db.com/exploits/46142/
    https://www.securepatterns.com/2018/10/cve-2018-14665-xorg-x-server.html

    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