Qt up to 5.11.x/6.8.9/6.11.2/6.12.0 Core null pointer dereference

Summaryinfo

A vulnerability identified as critical has been detected in Qt up to 5.11.x/6.8.9/6.11.2/6.12.0. This impacts an unknown function of the component Core. The manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2026-105924. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Qt up to 5.11.x/6.8.9/6.11.2/6.12.0 and classified as critical. This issue affects some unknown functionality of the component Core. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A NULL pointer dereference vulnerability in the Qt QCborValue to JSON conversion of the Qt Core module.

The advisory is shared at wiki.qt.io. The identification of this vulnerability is CVE-2026-105924 since 10/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 5.12.0 or 6.12.1 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Qt

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.8.0
• 6.8.1
• 6.8.2
• 6.8.3
• 6.8.4
• 6.8.5
• 6.8.6
• 6.8.7
• 6.8.8
• 6.8.9
• 6.9
• 6.10
• 6.11
• 6.11.0
• 6.11.1
• 6.11.2
• 6.12.0

License

• open-source

CPE 2.3info

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• 🔒
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CPE 2.2info

• 🔒
• 🔒
• 🔒

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Exploitinginfo

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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