Skip to main content
VulnerabilityPublished

CVE-2026-105924: Qt · NULL Pointer Dereference

Affects QtSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 4.3 Medium : upgrade to 6.12.1 when convenient.

Data as of 30 Oct 2026, 12:33 UTC

CVSS 4.0 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Qt)CVSS 4.04.3
Patch
Available – fixed in 6.12.1
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Qt and org.qtproject/qt to 6.12.1.

Affected software

ProductAffectedFixed in
qtQtAffected
  • >=5.12.0 <=6.8.9
  • >=6.9.0 <=6.11.2
  • >=6.12.0 <6.12.1
Fixed in
  • 6.12.1
Mavenorg.qtproject/qtpkg:maven/org.qtproject/qtOther threatsAffected
  • >=5.12.0 <=6.8.9
  • >=6.9.0 <=6.11.2
  • >=6.12.0 <6.12.1
Fixed in
  • 6.12.1

CPE configurations (2)

  • cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
  • cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade affected Qt versions to 6.12.1 or later where the vulnerability is fixed. No other mitigation or workaround is indicated.

Description

CVE-2026-105924 is a medium severity vulnerability in the Qt Core module involving a NULL pointer dereference during QCborValue to JSON conversion. It affects multiple Qt versions from 5.12.0 through 6.12.0. The issue can cause application crashes or denial of service. A fix is available in Qt version 6.12.1.

References

Community reviews

Loading reviews…