CVE-2018-14424

The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.

Published: 2018-08-14 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-14424 is rated Moderate Risk (45.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.53%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-14424

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.05% 0.53% +0.48%
2 2026-03-03 0.05% 0.05% -0.00%
3 2026-02-28 — 0.05% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-14424

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2018-14424

OS Trackers for CVE-2018-14424

vendor priority summary link
debian not yet assigned CVE-2018-14424 not yet assigned priority: Debian including 1 source packages (gdm3), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-14424
redhat medium — https://access.redhat.com/security/cve/CVE-2018-14424
suse medium CVE-2018-14424 severity moderate: SUSE including 100 source package names (gdm, gdm-3.10.0.1-54.6.3, …), 159 product×package rows across 31 product lines (SUSE Linux Enterprise Desktop 12 SP3, SUSE Linux Enterprise Desktop 12 SP4, … (31 product lines)): Fixed 146, Known Not Affected 13. https://www.suse.com/security/cve/CVE-2018-14424/
ubuntu medium CVE-2018-14424 medium priority: Ubuntu including 1 source packages (gdm3), 19 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 17, DNE 1, needed 1. https://ubuntu.com/security/CVE-2018-14424

Affected software / configurations for CVE-2018-14424

Vendor Product Version Raw CPE
gnome gnome_display_manager <= 3.29.1 cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:*

References for CVE-2018-14424

cvelogic Threat Intelligence