Quick answers
- Is CVE-2026-13326 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-13326 being exploited in the wild.
- How severe is CVE-2026-13326?
- Informational severity, published 11 September 2026.
- Which products and versions are affected?
- Qt NFC <UNKNOWN>.
- Is there a fix for CVE-2026-13326?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-13326 attacked?
- It is attacked with physical access, in a software library.
- Am I affected by CVE-2026-13326?
- Check whether you run Qt NFC at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An out-of-bounds read vulnerability exists in Qt NFC's language code length parsing logic. The vulnerability is triggered when processing a malformed NFC tag with an incorrectly specified language code length field. The attack requires physical proximity to the NFC reader and a crafted NFC tag. A successful exploit can cause a denial of service (crash) or limited information disclosure through memory disclosure. A patch is available in the Qt project's code review system (codereview.qt-project.org).
Affected products
- Qt Qt NFC <UNKNOWN>
Timeline
- 2026-09-11: disclosed