CVE-2026-100140

An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.

Base score1.9/ 10

SeverityLowCVSS 4.0

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityLow

Attack vectorLocalAV

Attack complexityLowAC

Attack requirementsPresentAT

Privileges requiredNonePR

User interactionPassiveUI

Vulnerable system confidentialityNoneVC

Vulnerable system integrityLowVI

Vulnerable system availabilityHighVA

Subsequent system confidentialityNoneSC

Subsequent system integrityNoneSI

Subsequent system availabilityNoneSA

Exploit maturityUnprovenE

RecoveryUserR

Provider urgencyGreenU

CVSS vector stringCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityQt

Last updatedNov 2, 2026 11:44:37 UTC

PublishedNov 2, 2026 11:44:37 UTC

ReservedSep 25, 2026 11:26:30 UTC