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

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k1.18-

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

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Qt 5.12.0/6.12.1

Timelineinfo

10/06/2026 CVE reserved
10/30/2026 +24 days Advisory disclosed
10/30/2026 +0 days VulDB entry created
10/30/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wiki.qt.io
Status: Confirmed

CNA: Qt
CVE: CVE-2026-105924 (🔒)

GCVE (CVE): GCVE-0-2026-105924
GCVE (VulDB): GCVE-100-429053

Entryinfo

Created: 10/30/2026 13:29
Changes: 10/30/2026 13:29 (69)
Complete: 🔍
Cache ID: 216::103

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