CVE-2026-54436
HIGHCVSS 7.4/10
Last modified
CVE-2026-54436 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. Heap-based Buffer Overflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could allow an attacker with local access to cause data tampering, arbitrary code execution, or a crash in the Character I/O device driver..
Description
Heap-based Buffer Overflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could allow an attacker with local access to cause data tampering, arbitrary code execution, or a crash in the Character I/O device driver.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| BlackBerry Ltd | QNX Software Development Platform | cpe:2.3:a:blackberry:qnx_software_development_platform:8.0:*:*:*:*:*:*:*; cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*; cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:* |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-54436?
Heap-based Buffer
Overflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could
allow an attacker with local access to cause data tampering, arbitrary code
execution, or a crash in the Character I/O device driver.
How severe is CVE-2026-54436?
CVE-2026-54436 has a CVSS score of 7.4/10 (HIGH severity).
How do I fix CVE-2026-54436?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-54436?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST