# Qt vulnerabilities

Source: https://junglewise.ai/threats/technologies/qt-qt  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/qt-qt.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Qt: 0 in the last 7 days and 5 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-107457, was published on 2 November 2026. 4 vulnerabilities in the last four weeks, up 300% on the four before (1).

## Counts

- Last 7 days: 0
- Last 30 days: 4
- Last 90 days: 5
- All time: 5 (0 critical, 0 exploited in the wild)

## About Qt

Cross-platform application and user interface development framework.

## Latest Qt vulnerabilities

- [CVE-2026-107457: Qt QMqttClient memory corruption in MQTT 5](https://junglewise.ai/threats/cve-2026-107457-a-memory-corruption-vulnerability-in-the-qmqttclient-class-of) (info, published 2 Nov 2026)
- [CVE-2026-95620: Qt use-after-free in QNetworkAccessManager HTTP/2 support](https://junglewise.ai/threats/cve-2026-95620-a-use-after-free-vulnerability-in-the-qt-qnetworkaccessmanager) (info, published 23 Oct 2026)
- [CVE-2026-16762: Qt QXmlStreamReader denial of service via crafted XML](https://junglewise.ai/threats/cve-2026-16762-an-attacker-able-to-supply-a-crafted-xml-document-to-an) (info, published 23 Oct 2026)
- [CVE-2026-105923: Qt VectorImage integer overflow and null-pointer dereference](https://junglewise.ai/threats/cve-2026-105923-a-malicious-svg-can-trigger-an-integer-overflow-which-in-turn) (info, published 21 Oct 2026)
- [CVE-2026-79680: Qt VNC Server authentication bypass in password mechanism](https://junglewise.ai/threats/cve-2026-79680-authentication-bypass-vulnerability-in-the-password) (info, published 24 Sep 2026)

## Most severe Qt vulnerabilities

- [CVE-2026-79680: Qt VNC Server authentication bypass in password mechanism](https://junglewise.ai/threats/cve-2026-79680-authentication-bypass-vulnerability-in-the-password) (info, published 24 Sep 2026)
- [CVE-2026-107457: Qt QMqttClient memory corruption in MQTT 5](https://junglewise.ai/threats/cve-2026-107457-a-memory-corruption-vulnerability-in-the-qmqttclient-class-of) (info, published 2 Nov 2026)
- [CVE-2026-95620: Qt use-after-free in QNetworkAccessManager HTTP/2 support](https://junglewise.ai/threats/cve-2026-95620-a-use-after-free-vulnerability-in-the-qt-qnetworkaccessmanager) (info, published 23 Oct 2026)
- [CVE-2026-16762: Qt QXmlStreamReader denial of service via crafted XML](https://junglewise.ai/threats/cve-2026-16762-an-attacker-able-to-supply-a-crafted-xml-document-to-an) (info, published 23 Oct 2026)
- [CVE-2026-105923: Qt VectorImage integer overflow and null-pointer dereference](https://junglewise.ai/threats/cve-2026-105923-a-malicious-svg-can-trigger-an-integer-overflow-which-in-turn) (info, published 21 Oct 2026)

## Vulnerabilities per week

4 vulnerabilities in the last four weeks, up 300% on the four before (1).

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 1 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 3 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 1 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Qt technologies

- [Qt Framework](https://junglewise.ai/threats/technologies/qt-qt-framework): 7 vulnerabilities
- [Qt 5](https://junglewise.ai/threats/technologies/qt-5): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Qt vulnerabilities", https://junglewise.ai/threats/technologies/qt-qt, 13 November 2026.