CVE-2023-43114

Name: CVE-2023-43114
Creator: NVD / NIST
Published: 2023-09-18T07:15:38.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2023-43114 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.25%

16.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Qt	Qt	< 5.15.16
Qt	Qt	>= 6.0.0, < 6.2.10
Qt	Qt	>= 6.5.0, < 6.5.3

References

https://codereview.qt-project.org/c/qt/qtbase/+/503026Patch, Vendor Advisory
https://codereview.qt-project.org/c/qt/qtbase/+/503026Patch, Vendor Advisory

Timeline

Published: Sep 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-43114?

How severe is CVE-2023-43114?

CVE-2023-43114 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2023-43114?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-43114?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST