CVE-2026-9499
A remote, anonymous attacker can exploit a vulnerability in QT to conduct a denial of service attack.
CSIRTS triage
- What
- A remote, anonymous attacker can exploit a vulnerability in QT to conduct a denial of service attack.
- Who is affected
- Remote users of QT are affected.
- Urgency
- Remediation is medium urgency as exploitation is possible but not currently being actively exploited.
- Action
- Install the latest updates for QT to mitigate the vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Advisory coverage (2)
- medium[NEW] [medium] QT: Vulnerability allows denial of servicecert-bund · 2026-07-22
- unknownCVE-2026-9499: An out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in …nvd · 2026-07-21
External references
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[](https://www.csirts.com/cve/CVE-2026-9499)