Buffer overflow in Blackberry Ltd Qnx Os For Safety

CVE-2026-4017

Buffer Overflow in the entry handler of the TraceEvent() system call could allow an attacker with local access to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-4017?
CVE-2026-4017 is a high-severity vulnerability in Blackberry Ltd Qnx Os For Safety, classified under Stack-based Buffer Overflow. CVSS score: 7.4/10. Published 2026-07-14.
How severe is CVE-2026-4017?
High severity. CVSS v3 base score is 7.4 out of 10.