CVE-2026-100140— Integer overflow vulnerability in XML parsing functionality of Qt5Compat impacts Qt

Quick assessment

Affected

qt qt

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Qt 的 Qt XML 解析功能（Qt5Compat / QXmlSimpleReader）中存在一个整数溢出漏洞。

CVSS 1.9 · Low Updated Nov 02, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Integer overflow vulnerability in XML parsing functionality of Qt5Compat impacts Qt

Source: CVE Program / CVE List V5

Vulnerability Description

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

Source: CVE Program / CVE List V5

CVSS Information

CVSS: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

Source: CVE Program / CVE List V5

Vulnerability Type

整数溢出或超界折返

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
qt	qt	6.0.0 ~ 6.8.9	`cpe:2.3:a:qt:qt::::::::`

II. Public POCs for CVE-2026-100140

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-100140

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Other References for CVE-2026-100140 (5)

https://www.cve.org/CVERecord?id=CVE-2026-100140

IV. Related Vulnerabilities

Same product: qt

Same vendor: qt

Same weakness: CWE-190