CVE-2026-101201

QBinaryJson::fromBinaryData() integer overflow leading to OOB read

Published Oct 20, 2026 CVSS 4.0 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read.
Title QBinaryJson::fromBinaryData() integer overflow leading to OOB read
First Time appeared Qt
Qt qt
Qt qt5compat
Qt qtbase
Weaknesses CWE-125
CWE-190
CPEs cpe:2.3:a:qt:qt5compat:*:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*
Vendors & Products Qt
Qt qt
Qt qt5compat
Qt qtbase
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 4.3, 'vector': '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:Amber'}

threat_severity

Moderate

Weaknesses

Sources

Status
PUBLISHED
Assigner
Qt
Published
Updated
Oct 20, 2026, 3:56 PM
Reserved
Sep 28, 2026, 9:34 AM
Status
Awaiting Analysis
Published
Oct 20, 2026, 9:17 AM
Modified
Oct 20, 2026, 7:59 PM
Severity
Moderate
Public date
Oct 20, 2026, 8:20 AM