CVE-2026-105946: CVE-2026-105946 - Out-of-bounds read in the QAuthenticator NTLM authentication handling in the Qt Network module in Qt Group Qt allows remote attackers to obt...
Out-of-bounds read in the QAuthenticator NTLM authentication handling in the Qt Network module in Qt Group Qt allows remote attackers to obtain sensitive information (heap memory contents) or cause a denial of service (application crash) via a crafted NTLM challenge sent by a malicious server or proxy, when an application using QNetworkAccessManager or QTcpSocket authenticates with NTLM. This is a high threat mapped to CVE-2026-105946; security leaders should validate exposure, prioritize patching, and verify compensating controls.
Related CVEs
Recommended Defense & Controls
Verified PartnersEnterprise Vulnerability Management & Continuous Scanning
Remediate & Protect →Identity, Privileged Access & Multi-Factor Authentication
Remediate & Protect →Next-Generation Firewall & DDoS Protection
Remediate & Protect →SecOpsPulse may earn an affiliate commission when you procure security software via these partner links. Tool selections are automated based on attack vectors and are independent of editorial coverage.
SecOps Recommended Triage Checklist
- 01.Scope & Asset Discovery: Query vulnerability scanners (e.g. Tenable) and software bill of materials (SBOM) to pinpoint affected packages and services.
- 02.Vendor Patch Application: Prioritize deployment of official security patches released by upstream vendors.
- 03.Compensating Defense Controls: If patch cannot be applied immediately, enforce strict firewall/WAF boundaries and isolate target instances.
- 04.Endpoint Behavioral Monitoring: Audit telemetry via EDR (e.g. CrowdStrike) for abnormal child processes or privilege escalation attempts.
🛠️ SecOps Rapid Incident & Triage Tools for CVE-2026-105946
Integrated Defense ToolchainCalculate CISA BOD 22-01 & SOC 2 patch deadlines for CVE-2026-105946 with 1-click calendar export.
Sanitize exploit payloads, attacker IPs, and C2 URLs linked to CVE-2026-105946 into STIX 2.1 or Snort.
Re-score environmental and temporal CVSS base score vectors for your environment.
Weekly Executive Briefing
Top critical & high-severity threats, every week.
No spam. Unsubscribe anytime. SecOpsPulse may include sponsored security tool recommendations.
Related High-Priority Advisories
CVE-2026-111998 - Vanus 0.8.0 through 0.9.0 contains a default credentials vulnerability that allows unauthenticated remote attackers to g
CVE-2026-111985 - A vulnerability was found in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. This impacts the function read_metadata_
CVE-2026-111984 - A vulnerability has been found in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. This affects the function create_it