CVE-2023-43114

An issue was discovered in Qt before 5.15.16, 6.x before 6.2.10, and 6.3.x through 6.5.x before 6.5.3 on Windows. When using the GDI font engine, if a corrupted font is loaded via QFontDatabase::addApplicationFont{FromData], then it can cause the application to crash because of missing length checks.

Published: 2023-09-18 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-43114 is rated Low Risk (27.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.25%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2023-43114

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 0.07% 0.25% +0.18%
2 2025-09-09 0.04% 0.07% +0.02%
3 2025-04-15 — 0.04% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-43114

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2023-43114

OS Trackers for CVE-2023-43114

vendor priority summary link
debian unimportant CVE-2023-43114 unimportant priority: Debian including 3 source packages (qt6-base, qtbase-opensource-src, qtbase-opensource-src-gles), 14 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 14. https://security-tracker.debian.org/tracker/CVE-2023-43114
redhat medium — https://access.redhat.com/security/cve/CVE-2023-43114
ubuntu medium CVE-2023-43114 medium priority: Ubuntu including 4 source packages (qt4-x11, qt6-base, qtbase-opensource-src, qtbase-opensource-src-gles), 48 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 29, DNE 9, needs-triage 6, not-affected 4. https://ubuntu.com/security/CVE-2023-43114

Affected software / configurations for CVE-2023-43114

Vendor Product Version Raw CPE
qt qt < 5.15.16 cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
qt qt >= 6.0.0, < 6.2.10 cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
qt qt >= 6.5.0, < 6.5.3 cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*

References for CVE-2023-43114

cvelogic Threat Intelligence