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  4. CVE 2026 107457 memory corruption vulnerability in qmqttclient
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Back to active CVEs
Low · CVSS 2.3CVE-2026-107457

Memory corruption vulnerability in QMqttClient impacts Qt MQTTCVE-2026-107457

Answer in brief

CVE-2026-107457 records a Low severity (CVSS 2.3) vulnerability in Memory corruption vulnerability in QMqttClient impacts Qt MQTT. The current sources do not mark it as known exploited. The current feed maps qt/Qt (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 2.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 2.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps qt/Qt (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
qt/Qtgeneric>=5.12.0 <=6.8.8 || >=6.9.0 <=6.11.2Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for qt/Qt.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 2, 2026

Sources and claim methodology

  • Source referencecodereview.qt-project.org
  • Source referencewiki.qt.io
Upstream source description

A memory corruption vulnerability in the QMqttClient class of the Qt MQTT module. Under certain MQTT 5 connection settings between client and server, QMqttClient may corrupt memory, which can cause the application to crash.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787, CWE-129
Source
CVE List V5
Source checked
Nov 2, 2026
References
2 linked sources
Open source record