Qt up to 6.2.x/6.5.9/6.8.4/6.9.0 ICNS Image File denial of service

Summaryinfo

A vulnerability was found in Qt up to 6.2.x/6.5.9/6.8.4/6.9.0. It has been classified as problematic. Impacted is an unknown function of the component ICNS Image File Handler. This manipulation causes denial of service. The identification of this vulnerability is CVE-2025-5683. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Qt up to 6.2.x/6.5.9/6.8.4/6.9.0. Affected by this vulnerability is an unknown code block of the component ICNS Image File Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

When loading a specifically crafted ICNS format image file in QImage then it will trigger a crash. This issue affects Qt from versions 6.3.0 through 6.5.9, from 6.6.0 through 6.8.4, 6.9.0. This is fixed in 6.5.10, 6.8.5 and 6.9.1.

The weakness was shared by Oss Fuzz. It is possible to read the advisory at issues.oss-fuzz.com. This vulnerability is known as CVE-2025-5683 since 06/04/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 6.3.0, 6.5.10, 6.8.5 or 6.9.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-16968). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Qt

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.5.0
• 6.5.1
• 6.5.2
• 6.5.3
• 6.5.4
• 6.5.5
• 6.5.6
• 6.5.7
• 6.5.8
• 6.5.9
• 6.6
• 6.7
• 6.8
• 6.8.0
• 6.8.1
• 6.8.2
• 6.8.3
• 6.8.4
• 6.9.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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