CVE-2026-40272: BlackBerry QNX traceparser improper input validation in decode function

CVE-2026-40272 · Severity: high · CVSS 7 · Published 2026-07-29

A vulnerability exists in the BlackBerry QNX traceparser library, which is used to analyze system performance and kernel events. An attacker could provide a specially crafted or corrupted event log file that, when opened by a user, could cause the system to crash or allow the execution of unauthorized code. This could lead to a loss of system availability or the compromise of sensitive operational data on QNX-based hosts.

Technologies: Blackberry QNX Software Development Platform. Vendors: Blackberry.

Quick answers

Is CVE-2026-40272 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-40272 being exploited in the wild.
How severe is CVE-2026-40272?
High severity, with a CVSS score of 7, published 29 July 2026.
Which products and versions are affected?
Blackberry QNX Software Development Platform 7.0, 7.1, 8.0.
Is there a fix for CVE-2026-40272?
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-2026-40272 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-40272?
Check whether you run Blackberry QNX Software Development Platform 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 improper input validation vulnerability (CWE-1284) exists in the decode() function within libtraceparser. The flaw is triggered when the library processes a corrupted kernel trace event log (.kev) file. While the attack vector is local, it requires a high degree of complexity and user interaction, as a user must be enticed to open the malicious file. Successful exploitation can lead to arbitrary code execution or a denial-of-service (crash) in any process utilizing the affected library on QNX hosts or targets. The vulnerability affects QNX Software Development Platform versions 7.0, 7.1, and 8.0.

Affected products

  • BlackBerry QNX Software Development Platform 7.0, 7.1, 8.0

Timeline

  • 2026-07-29: advisory: Initial advisory published by BlackBerry and NVD.

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.