CVE-2026-14629

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-07-04. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw has been found in RT-Thread up to 5.2.2. Affected is the function read/write/sys_ioctl of the file components/lwp/lwp_syscall.c of the component Parameter Handler. Executing a manipulation can lead to divide by zero. The attack may be launched remotely. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

CVSS v3
4.3
EG Score
4.3(high)
EPSS
22.7%
KEV
Not listed

Published

July 4, 2026

Last Modified

July 6, 2026

Advisory Details (3)

Auto-updated Jul 4, 2026
No patch confirmed yet. Sources: github_pr.
github_pr

Harden serial ioctl user-pointer handling in RT-Smart

Upstream fix in progress (PR #11453 · RT-Thread/rt-thread, state=open)

https://github.com/RT-Thread/rt-thread/pull/11453
generic

[Bug] Security-related Bug RT-Smart serial ioctl trusts user pointers and can crash the kernel · Issue #11429 · RT-Thread/rt-thread · GitHub

https://github.com/RT-Thread/rt-thread/issues/11429
generic

GitHub - RT-Thread/rt-thread: RT-Thread is an open source IoT Real-Time Operating System (RTOS). https://rt-thread.github.io/rt-thread/ · GitHub

https://github.com/RT-Thread/rt-thread/

Vendor Advisories for CVE-2026-14629(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 18:21 UTCNVD updateCVSS v4 → 2.1
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 15:36 UTCMITRE cvelistV5CVSS v4 → 5.3
  4. 2026-07-06 11:38 UTCEG score recompute
  5. 2026-07-06 11:38 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 12:43 UTCEG score recompute
  8. 2026-07-05 12:43 UTCGHSA enrichment
  9. 2026-07-04 14:27 UTCNVD updateCVSS v4 → 2.1
  10. 2026-07-04 13:47 UTCEG score recompute
  11. 2026-07-04 13:46 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-14629?
CVE-2026-14629 is a medium vulnerability published on July 4, 2026. A flaw has been found in RT-Thread up to 5.2.2. Affected is the function read/write/sysioctl of the file components/lwp/lwpsyscall.c of the component Parameter Handler. Executing a manipulation can lead to divide by zero. The attack may be launched remotely. The exploit has been published and may…
When was CVE-2026-14629 disclosed?
CVE-2026-14629 was first published in the National Vulnerability Database on July 4, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14629 actively exploited?
CVE-2026-14629 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-14629?
CVE-2026-14629 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-14629?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14629, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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