An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
qt Qt unaffected
Version Status Constraints
0 unknown < 5.0.0
5.0.0 affected ≤ 6.8.8
6.9.0 affected ≤ 6.11.2

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Project Subscriptions

Vendors Products
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Qt Subscribe
Qt5compat Subscribe
Qtbase Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://codereview.qt-project.org/c/qt/qt5compat/+/763226 cve-icon cve-icon
https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-107479: cve-icon cve-icon
History

Wed, 04 Nov 2026 12:30:00 +0000

Type Values Removed Values Added
Description An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.
Title Integer truncation vulnerability in QTextCodec conversion functions impacts Qt Framework
First Time appeared Qt
Qt qt
Qt qt5compat
Qt qtbase
Weaknesses CWE-197
CPEs cpe:2.3:a:qt:qt5compat:*:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*
Vendors & Products Qt
Qt qt
Qt qt5compat
Qt qtbase
References
Metrics cvssV4_0

{'score': 1.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Green'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Qt

Published:

Updated: 2026-11-04T12:10:28.423Z

Reserved: 2026-10-08T07:59:02.714Z

Link: CVE-2026-107479

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-04T13:17:21.540

Modified: 2026-11-04T13:17:21.540

Link: CVE-2026-107479

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T13:15:14Z

Weaknesses