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Fencer Vulns
high 7.5

CVE-2023-37369 json

In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can be an application crash in QXmlStreamReader via a c…

published 2023-08-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-41271

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can be an application crash in QXmlStreamReader via a crafted XML string that triggers a situation in which a prefix is greater than a length.

Patch / fix

  • qt qt 5.15.15, 6.2.9, 6.5.2
  • qt6-base Debian 14, Debian 13 6.4.2+dfsg-20
  • qtbase-opensource-src Debian 12 5.15.8+dfsg-11+deb12u1
  • qtbase-opensource-src Debian 14, Debian 13 5.15.10+dfsg-3
  • qtbase-opensource-src-gles Debian 14, Debian 13 5.15.10+dfsg-2

debian advisories DEBIAN-CVE-2023-37369

  • qt5-qtbase RHEL 8 5.15.3-5.el8
  • qt5-qtbase-gui RHEL 8 5.15.3-5.el8
  • qt5-qtbase-odbc RHEL 8 5.15.3-5.el8
  • qt5-qtbase-mysql RHEL 8 5.15.3-5.el8
  • qt5-qtbase-common RHEL 8 5.15.3-5.el8
  • qt5-qtbase-examples RHEL 8 5.15.3-5.el8
  • qt5-qtbase-postgresql RHEL 8 5.15.3-5.el8
  • qt5 RHEL 9 5.15.9-1.el9

red hat advisories RHSA-2023:6967RHSA-2023:6369

  • libqt5-qtbase SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +4 more 5.12.7-150200.4.29.1
  • libqt5-qtbase SLE Module for Desktop Applications 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.15.8+kde185-150500.4.13.1
  • libqt5-qtbase SLE Module for Desktop Applications 15 SP4, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 5.15.2+kde294-150400.6.10.1
  • libqt4 SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +1 more 4.8.7-8.19.1
  • libqt4-sql-plugins SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +1 more 4.8.7-8.19.1
  • libqt4 SLES LTSS Extended Security 12 SP5 4.8.7-8.22.1
  • libqt4-sql-plugins SLES LTSS Extended Security 12 SP5 4.8.7-8.22.1

suse advisories SUSE-SU-2025:02968-1SUSE-SU-2024:2946-1SUSE-SU-2023:4951-1SUSE-SU-2023:4950-1SUSE-SU-2023:4622-1

  • qt6-base openSUSE Tumbleweed 6.5.2-2.1
  • libqt5-qtbase openSUSE Tumbleweed 5.15.11+kde138-3.1

opensuse advisories openSUSE-SU-2024:13147-1openSUSE-SU-2024:13470-1

  • qt5-qtbase AlmaLinux 8 5.15.3-5.el8
  • qt5-qtbase-gui AlmaLinux 8 5.15.3-5.el8
  • qt5-qtbase-odbc AlmaLinux 8 5.15.3-5.el8
  • qt5-qtbase-mysql AlmaLinux 8 5.15.3-5.el8
  • qt5-qtbase-common AlmaLinux 8 5.15.3-5.el8
  • qt5-qtbase-examples AlmaLinux 8 5.15.3-5.el8
  • qt5-qtbase-postgresql AlmaLinux 8 5.15.3-5.el8
  • qt5 AlmaLinux 9 5.15.9-1.el9

almalinux advisories ALSA-2023:6967ALSA-2023:6369

  • qt5 Rocky Linux 9 5.15.9-1.el9
  • qt5-qtdoc Rocky Linux 9 5.15.9-1.el9
  • qt5-qtsvg Rocky Linux 9 5.15.9-2.el9
  • adwaita-qt Rocky Linux 9 1.4.2-1.el9
  • python-qt5 Rocky Linux 9 5.15.9-1.el9
  • qt5-qtscript Rocky Linux 9 5.15.9-1.el9
  • qt5-qtsensors Rocky Linux 9 5.15.9-1.el9
  • qt5-qtwayland Rocky Linux 9 5.15.9-1.el9

rocky linux advisories RLSA-2023:6369

  • qt5-qtbase CBL-Mariner 2.0 5.12.11-9

azure linux advisories AZL-27920

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-37369 updated cvss 7.5

qtbase: buffer overflow in QXmlStreamReader

  • Red Hat Enterprise Linux 7 qt5-qtbase, qt5-qtbase-gui, qt5-rpm-macros, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, +2 more
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) qt5-qtbase-static 5.15.3-5.el8, qt5-qtbase-debuginfo 5.15.3-5.el8, qt5-qtbase-debugsource 5.15.3-5.el8, qt5-qtbase-gui-debuginfo 5.15.3-5.el8, qt5-qtbase-odbc-debuginfo 5.15.3-5.el8, qt5-qtbase-devel-debuginfo 5.15.3-5.el8, +4 more
    fixed: vendor fix RHSA-2023:6967
  • Red Hat CodeReady Linux Builder (v. 9) qt5-qtbase-static 5.15.9-7.el9, qt5-qtbase-debuginfo 5.15.9-7.el9, qt5-qtbase-debugsource 5.15.9-7.el9, qt5-qtbase-gui-debuginfo 5.15.9-7.el9, qt5-qtbase-odbc-debuginfo 5.15.9-7.el9, qt5-qtbase-devel-debuginfo 5.15.9-7.el9, +4 more
    fixed: vendor fix RHSA-2023:6369
  • Red Hat Enterprise Linux AppStream (v. 8) qt5-qtbase 5.15.3-5.el8, qt5-qtbase-gui 5.15.3-5.el8, qt5-qtbase-odbc 5.15.3-5.el8, qt5-qtbase-mysql 5.15.3-5.el8, qt5-qtbase-common 5.15.3-5.el8, qt5-qtbase-examples 5.15.3-5.el8, +1 more
    fixed: vendor fix RHSA-2023:6967
  • Red Hat Enterprise Linux AppStream (v. 9) qt5-qtbase 5.15.9-7.el9, qt5-qtbase-gui 5.15.9-7.el9, qt5-qtbase-odbc 5.15.9-7.el9, qt5-qtbase-mysql 5.15.9-7.el9, qt5-qtbase-common 5.15.9-7.el9, qt5-qtbase-examples 5.15.9-7.el9, +1 more
    fixed: vendor fix RHSA-2023:6369
  • Red Hat CodeReady Linux Builder (v. 9) python3-qt5 5.15.9-1.el9 Red Hat Enterprise Linux AppStream (v. 9) qt5 5.15.9-1.el9, qt5-qt3d 5.15.9-1.el9, adwaita-qt 1.4.2-1.el9, qt5-qtdoc 5.15.9-1.el9, qt5-qtsvg 5.15.9-2.el9, adwaita-qt5 1.4.2-1.el9, +55 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.58% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugreports.qt.io https://bugreports.qt.io/browse/QTBUG-114829 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.