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8 vulnerabilities
CVE-2026-95509 (GCVE-0-2026-95509)
Vulnerability from cvelistv5 – Published: 2026-09-29 10:40 – Updated: 2026-09-29 15:02
VLAI
EPSS
VEX
Title
Out-of-bounds read vulnerability in string formatting impacts Qt for MCUs
Summary
Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:02 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.qt.io/List_of_known_vulnerabilities_… | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| qt | Qt for MCUs |
Affected:
2.6.0 , < 2.11.3
(python)
Affected: 2.12.0 , < 2.12.3 (python) cpe:2.3:a:qt:qt_for_mcus:*:*:*:*:*:*:*:* cpe:2.3:a:qt:qt_for_mcus:*:*:*:*:*:*:*:* |
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CVE-2026-79680 (GCVE-0-2026-79680)
Vulnerability from cvelistv5 – Published: 2026-09-24 10:56 – Updated: 2026-09-24 12:18
VLAI
EPSS
VEX
Title
Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module
Summary
Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module. An attacker using a specially modified VNC client that violates the RFB protocol can bypass Qt VNC Server's password authentication and gain unauthorized remote access to the shared application, compromising the confidentiality and integrity of the session.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 12:17 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://wiki.qt.io/List_of_known_vulnerabilities_… | issue-tracking |
| https://codereview.qt-project.org/c/qt/tqtc-qtvnc… | patch |
Impacted products
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CVE-2026-78253 (GCVE-0-2026-78253)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:39 – Updated: 2026-09-23 14:36
VLAI
EPSS
VEX
Title
Denial-of-service (stack-exhaustion) vulnerability in QXmlStreamReader::readElementText() impacts Qt
Summary
Uncontrolled recursion in QXmlStreamReader::readElementText() in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted XML document.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 14:35 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://codereview.qt-project.org/c/qt/qtbase/+/754345 | patch |
Impacted products
Date Public
2026-09-23 00:00
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CVE-2026-79616 (GCVE-0-2026-79616)
Vulnerability from cvelistv5 – Published: 2026-09-23 09:51 – Updated: 2026-09-23 14:24
VLAI
EPSS
VEX
Title
Out-of-bounds read vulnerability in Context2D.path and PathSvg.path properties impacts Qt Quick
Summary
Out-of-bounds read while parsing untrusted SVG path strings in Qt Quick's Context2D.path / PathSvg.path.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 14:23 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://codereview.qt-project.org/c/qt/qtdeclarat… | patch |
Impacted products
Date Public
2026-09-23 00:00
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CVE-2026-76151 (GCVE-0-2026-76151)
Vulnerability from cvelistv5 – Published: 2026-09-16 09:58 – Updated: 2026-09-16 13:19
VLAI
EPSS
VEX
Title
Out-of-bounds read (buffer over-read) vulnerability in HTTP Cache-Control response header parsing impacts Qt Framework (QtNetwork module)
Summary
Out-of-bounds read (buffer over-read) in the HTTP Cache-Control response header parsing in the QtNetwork module in Qt Group Qt 6.0.0 through 6.8.8, and 6.9.0 through 6.11.1, allows remote attackers to cause a denial of service (application crash) via an excessively large Cache-Control header value returned by an untrusted or compromised HTTP server to an application using QNetworkAccessManager. Only the client side of the connection is affected and 32-bit builds are not affected; the out-of-bounds access is read-only, with no information disclosure and no code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 13:19 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://codereview.qt-project.org/c/qt/qtbase/+/752129 | patch |
Impacted products
Date Public
2026-07-14 20:43
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CVE-2026-19248 (GCVE-0-2026-19248)
Vulnerability from cvelistv5 – Published: 2026-09-16 06:37 – Updated: 2026-09-16 15:02
VLAI
EPSS
VEX
Title
Unbounded recursion vulnerability in the QDomNode destructor of Qt XML impacts Qt
Summary
QDomDocument XML parsing is vulnerable to a remotely-triggerable denial-of-service crash when processing untrusted input.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 15:02 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://codereview.qt-project.org/c/qt/qtbase/+/740427 | patch |
Impacted products
Date Public
2026-09-11 00:00
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CVE-2026-13326 (GCVE-0-2026-13326)
Vulnerability from cvelistv5 – Published: 2026-09-11 06:11 – Updated: 2026-09-11 12:08
VLAI
EPSS
VEX
Title
Out-of-bounds read and integer underflow vulnerability in QNdefNfcTextRecord impacts Qt NFC module
Summary
An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 12:08 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://codereview.qt-project.org/c/qt/qtconnecti… | patch |
Impacted products
Date Public
2026-09-10 00:00
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CVE-2026-11573 (GCVE-0-2026-11573)
Vulnerability from cvelistv5 – Published: 2026-09-08 12:06 – Updated: 2026-09-11 09:31
VLAI
EPSS
VEX
Title
Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)
Summary
Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later), QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator<<(QTextStream&, const QDomNode&). Denial of service only — no code execution and no memory disclosure.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:43 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://codereview.qt-project.org/c/qt/qtbase/+/606899 | patch |
Impacted products
Date Public
2024-12-05 00:00
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"cpeApplicability": [
{
"nodes": [
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"cpeMatch": [
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"criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.2.0",
"vulnerable": true
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"datePublic": "2024-12-05T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
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"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). \u003ccode\u003eQDomElementPrivate::save()\u003c/code\u003e and \u003ccode\u003eQDomNodePrivate::save()\u003c/code\u003e recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via \u003ccode\u003eQDomDocument::toByteArray()\u003c/code\u003e (Qt 4.0 and later), \u003ccode\u003eQDomDocument::toString()\u003c/code\u003e, \u003ccode\u003eQDomDocument::toCString()\u003c/code\u003e, \u003ccode\u003eQDomNode::save()\u003c/code\u003e, and \u003ccode\u003eoperator\u0026lt;\u0026lt;(QTextStream\u0026amp;, const QDomNode\u0026amp;)\u003c/code\u003e. Denial of service only \u2014 no code execution and no memory disclosure.\u003c/p\u003e"
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"value": "CAPEC-230: Serialization Data with Nested Payloads"
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"Recovery": "NOT_DEFINED",
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"attackComplexity": "LOW",
"attackRequirements": "NONE",
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"baseScore": 7.1,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
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"format": "CVSS",
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"value": "GENERAL"
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"descriptions": [
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"description": "CWE-674: Uncontrolled Recursion",
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"orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
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"references": [
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"name": "QTBUG-131151 \u2014 Qt bug tracker entry",
"tags": [
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"url": "https://codereview.qt-project.org/c/qt/qtbase/+/606899"
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],
"source": {
"discovery": "EXTERNAL"
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"title": "Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)",
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"cveId": "CVE-2026-11573",
"datePublished": "2026-09-08T12:06:08.617Z",
"dateReserved": "2026-06-08T10:01:44.921Z",
"dateUpdated": "2026-09-11T09:31:34.532Z",
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