CVE-2023-33376

CRITICALNVD 9.89.8—

9.8

Connected IO v2.1.0 and prior has an argument injection vulnerability in its iptables command message in its communication protocol, enabling attackers to execute arbitrary OS commands on devices.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 29.2%
KEV: Not listed

Published

August 4, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 27, 2026

No patch confirmed yet.

generic

Product Not Found | Elleco Networks

https://www.connectedio.com/products/routers

generic

CVE-2023-33376 | Claroty

https://claroty.com/team82/disclosure-dashboard/cve-2023-33376

Weakness Classification(1)

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

CWE-88Argument Injection or Modification

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
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Frequently asked(5)

What is CVE-2023-33376?

CVE-2023-33376 is a critical vulnerability published on August 4, 2023. Connected IO v2.1.0 and prior has an argument injection vulnerability in its iptables command message in its communication protocol, enabling attackers to execute arbitrary OS commands on devices.

When was CVE-2023-33376 disclosed?

CVE-2023-33376 was first published in the National Vulnerability Database on August 4, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-33376 actively exploited?

CVE-2023-33376 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-33376?

CVE-2023-33376 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-33376?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-33376, 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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CVE-2023-33376

📅 Published

🔄 Last Modified

📋 Advisory Details (2)