Quick answers
- Is CVE-2026-54437 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-54437 being exploited in the wild.
- How severe is CVE-2026-54437?
- Medium severity, with a CVSS score of 6.2, published 10 November 2026.
- Which products and versions are affected?
- QNX io-char library.
- Is there a fix for CVE-2026-54437?
- 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-2026-54437 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-54437?
- Check whether you run QNX Io-Char Library. 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
The vulnerability is an improper input validation flaw in the DCMD_CHR_TCINJECTC devctl() handler within the io-char library. An attacker with local access can trigger data tampering in the memory input buffer of the Character I/O device driver through a crafted devctl() call. This is a local privilege or access issue requiring attacker presence on the affected system.
Affected products
- QNX io-char library
Timeline
- 2026-11-10: disclosed