Skip to content

CVE-2026-4018

Time-of-check Time-of-use (TOCTOU): Is CVE-2026-4018 real, exploitable, or a false positive? Here's the community verdict.

☆ Watch

signals

public sources

Exploited in wild
Not listed
CISA KEV
Public exploit
None known
Metasploit/EDB/PoC
Base severity
6.4 Medium
CVSS
Exploitation prob.
0.1%
FIRST EPSS
Weakness
CWE-367 · Time-of-check Time-of-use (TOCTOU)
CWE

Moderate signals. Triage by your actual exposure and reachability.

baseline read

auto · not a community verdict

Low signal — verdict needed

Few public signals point to active risk. Whether a scanner hit here is a true or false positive depends on your version and config — community verdicts decide.

Based on CVSS · FIRST EPSS

Confirm or dispute →

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an attacker with local access and with the PROCMGR_AID_TRACE ability, to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.

References

NVD MITRE CVE.org

Published

Embed this verdict
TruePositive verdict for CVE-2026-4018
Markdown
[![TruePositive verdict](https://www.truepositive.app/cve/CVE-2026-4018/badge.svg)](https://www.truepositive.app/cve/CVE-2026-4018)
HTML
<a href="https://www.truepositive.app/cve/CVE-2026-4018"><img src="https://www.truepositive.app/cve/CVE-2026-4018/badge.svg" alt="TruePositive verdict for CVE-2026-4018"></a>

Live badge that updates automatically as the community verdict changes.

Community ground truth

Be the first practitioner to weigh in

So far this is only TruePositive's editorial baseline from public sources. Add your real-world verdict below — it becomes the signal the next person triaging this relies on.

🥇 The first 50 practitioners to contribute earn a Founding Contributor badge.

In your experience, is this finding real and exploitable?

awaiting field verdicts
Real, but not a risk here
Not a real issue

No account needed. Anonymous verdicts post as an unverified signal. Log in to make yours verified and earn reputation.

Field notes & remediation

Verdicts are the quick signal. Notes are the evidence and fixes behind them.

No notes yet. Be the first to share what you saw, or a fix that worked.

    Add a field note or remediationoptional
    Note type

    What are you adding?

    Markdown supported · minimum 20 characters.

    Related CVEs

    Same weakness: CWE-367 · Time-of-check Time-of-use (TOCTOU).