Application crash and memory disclosure via unchecked length
Published Sep 11, 2026 · Updated Sep 11, 2026
Out-of-bounds read in Qt Framework allows physically proximate attackers to crash applications or expose adjacent memory via NFC tags. QNdefNfcTextRecord trusts the declared NDEF language-code length, subtracts it from the payload size without a bounds check, and uses the underflowed result to construct a string beyond the payload buffer. Exploitation requires an unauthenticated attacker's crafted tag to be brought within NFC range and a user to tap the device; consequences are limited to application termination and adjacent-memory disclosure.
Summary
What happened
Out-of-bounds read in Qt Framework allows physically proximate attackers to crash applications or expose adjacent memory via NFC tags. QNdefNfcTextRecord trusts the declared NDEF language-code length, subtracts it from the payload size without a bounds check, and uses the underflowed result to construct a string beyond the payload buffer. Exploitation requires an unauthenticated attacker's crafted tag to be brought within NFC range and a user to tap the device; consequences are limited to application termination and adjacent-memory disclosure.
The record
- CVE
- CVE-2026-13326
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- The Qt Company
- Product
- Qt Framework
- Classifications
- T1200
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.2.0 <6.8.9
- Affected versionversion=6.9.0 <6.11.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo