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No exploitation reportedAwaiting NVD analysis

CVE-2026-54436

Vulnerabilities in the QNX io-char library Impacts QNX Software Development Platform

No exploitation reported by the sources we read.

  • Published2026-11-10
  • WeaknessCWE-122

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-1018:42CVE publishedCNA

Versions per branch

Products declared by the CNA

As blackberry, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • BlackBerry Ltd QNX Software Development Platformother versions: not affected
    Affected
    • = cpe:2.3:a:blackberry:qnx_software_development_platform:8.0:*:*:*:*:*:*:*no fix statedcpe
    • = cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*no fix statedcpe
    • = cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*no fix statedcpe

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-10

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-54436 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-11-10
  • CNACVSS 3.17.42026-11-10
  • CNAweakness (CWE)CWE-1222026-11-10

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-10
Last Modified
2026-11-10
NVD 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.

Is CVE-2026-54436 actively exploited?

Active exploitation of CVE-2026-54436 has not been confirmed.

What is the CVSS score for CVE-2026-54436?

CVE-2026-54436 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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