CVE-2025-12385

Improper validation of <img> tag size in Text component parser

Published Dec 3, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Description

Allocation of Resources Without Limits or Throttling, Improper Validation of Specified Quantity in Input vulnerability in The Qt Company Qt on Windows, MacOS, Linux, iOS, Android, x86, ARM, 64 bit, 32 bit allows Excessive Allocation.

This issue affects users of the Text component in Qt Quick. Missing validation of the width and height in the <img> tag could cause an application to become unresponsive.

This issue affects Qt: from 5.0.0 through 6.5.10, from 6.6.0 through 6.8.5, from 6.9.0 through 6.10.0.

Affected Products

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

Vendor Product Default status Versions

unaffected

Version	Status	Constraints
`5.0.0`	affected	≤ 6.5.10
`6.6.0`	affected	≤ 6.8.5
`6.9.0`	affected	≤ 6.10.0

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Ubuntu USN	USN-8357-1	Qt Declarative vulnerability

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

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.

Exploit prediction score: < 1% (0.338% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://codereview.qt-project.org/c/qt/qtdeclarative/+/687239
https://codereview.qt-project.org/c/qt/qtdeclarative/+/687766

History

Jul 29, 2026 9:30 AM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
Description	Allocation of Resources Without Limits or Throttling, Improper Validation of Specified Quantity in Input vulnerability in The Qt Company Qt on Windows, MacOS, Linux, iOS, Android, x86, ARM, 64 bit, 32 bit allows Excessive Allocation. This issue affects users of the Text component in Qt Quick. Missing validation of the width and height in the <img> tag could cause an application to become unresponsive. This issue affects Qt: from 5.0.0 through 6.5.10, from 6.6.0 through 6.8.5, from 6.9.0 through 6.10.0.	Allocation of Resources Without Limits or Throttling, Improper Validation of Specified Quantity in Input vulnerability in The Qt Company Qt on Windows, MacOS, Linux, iOS, Android, x86, ARM, 64 bit, 32 bit allows Excessive Allocation. This issue affects users of the Text component in Qt Quick. Missing validation of the width and height in the <img> tag could cause an application to become unresponsive. This issue affects Qt: from 5.0.0 through 6.5.10, from 6.6.0 through 6.8.5, from 6.9.0 through 6.10.0.
First Time appeared		Qt Qt qt
CPEs	cpe:2.3:a:the_qt_company:qt:::32_bit:::::* cpe:2.3:a:the_qt_company:qt:::64_bit:::::* cpe:2.3:a:the_qt_company:qt:::android:::::* cpe:2.3:a:the_qt_company:qt:::arm:::::* cpe:2.3:a:the_qt_company:qt:::ios:::::* cpe:2.3:a:the_qt_company:qt:::linux:::::* cpe:2.3:a:the_qt_company:qt:::macos:::::* cpe:2.3:a:the_qt_company:qt:::windows:::::* cpe:2.3:a:the_qt_company:qt:::x86:::::*	cpe:2.3:a:qt:qt:::32_bit:::::* cpe:2.3:a:qt:qt:::64_bit:::::* cpe:2.3:a:qt:qt:::android:::::* cpe:2.3:a:qt:qt:::arm:::::* cpe:2.3:a:qt:qt:::ios:::::* cpe:2.3:a:qt:qt:::linux:::::* cpe:2.3:a:qt:qt:::macos:::::* cpe:2.3:a:qt:qt:::windows:::::* cpe:2.3:a:qt:qt:::x86:::::*
Vendors & Products	The Qt Company The Qt Company qt	Qt Qt qt

Dec 3, 2025 10:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Dec 3, 2025 7:45 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Allocation of Resources Without Limits or Throttling, Improper Validation of Specified Quantity in Input vulnerability in The Qt Company Qt on Windows, MacOS, Linux, iOS, Android, x86, ARM, 64 bit, 32 bit allows Excessive Allocation. This issue affects users of the Text component in Qt Quick. Missing validation of the width and height in the <img> tag could cause an application to become unresponsive. This issue affects Qt: from 5.0.0 through 6.5.10, from 6.6.0 through 6.8.5, from 6.9.0 through 6.10.0.
Title		Improper validation of <img> tag size in Text component parser
First Time appeared		The Qt Company The Qt Company qt
Weaknesses		CWE-1284 CWE-770
CPEs		cpe:2.3:a:the_qt_company:qt:::32_bit:::::* cpe:2.3:a:the_qt_company:qt:::64_bit:::::* cpe:2.3:a:the_qt_company:qt:::android:::::* cpe:2.3:a:the_qt_company:qt:::arm:::::* cpe:2.3:a:the_qt_company:qt:::ios:::::* cpe:2.3:a:the_qt_company:qt:::linux:::::* cpe:2.3:a:the_qt_company:qt:::macos:::::* cpe:2.3:a:the_qt_company:qt:::windows:::::* cpe:2.3:a:the_qt_company:qt:::x86:::::*
Vendors & Products		The Qt Company The Qt Company qt
References		https://codereview.qt-project.org/c/qt/qtdeclarative/+/687239 https://codereview.qt-project.org/c/qt/qtdeclarative/+/687766
Metrics		cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`