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CVE-2026-4017Buffer overflow in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety
- 7.4HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By blackberry
- 4 months later
· 4 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| blackberryCNA (assigner) | 3.1 | High7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Affected products
BlackBerry Ltd · QNX Software Development Platform
- affected 7.1
- affected cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*
- affected 7.0
- affected cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*
BlackBerry Ltd · QNX OS for Safety
- affected 2.2.8 and earlier
- affected cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:8:*:*:*:*:*:*
- affected 2.1.5 and earlier
- affected cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:5:*:*:*:*:*:*
- affected 2.0.3 and earlier
- affected cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:3:*:*:*:*:*:*
BlackBerry Ltd. · QNX OS for Medical
- affected 2.0.2 and earlier
- affected cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:*
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-44320 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-4017)Record last updated .