🛡️ CVE-2023-43114 on Ubuntu — qt4-x11

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Distribution advisory

This page covers CVE-2023-43114 as tracked by Ubuntu, for the package qt4-x11. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

UBUNTU-CVE-2023-43114 is recorded against 4 packages.

  • qt4-x11
  • qt6-base
  • qtbase-opensource-src
  • qtbase-opensource-src-gles

Timeline and source

Published on 18 September 2023 and last revised on 2 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
codereview.qt-project.org (Report)
www.cve.org (Report)

CVE-2023-43114 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2023-09-18
Updated 2026-08-11
Modified 2026-07-02
Fix URL N/A

Affected Packages

Software From version Fixed in
qt4-x11 — —
qt6-base — —
qtbase-opensource-src — —
qtbase-opensource-src-gles — —

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