How severe is CVE-2023-33378?

CVE-2023-33378 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-33378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-33378?

CVE-2023-33378 affects Connectedio Connected Io. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-33378?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-33378 published?

CVE-2023-33378 was published on 2023-08-04 and last updated on 2026-06-17.

CVE-2023-33378

CVE-2023-33378 is a critical-severity vulnerability in Connectedio Connected Io with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-88.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-88
Affected product: Connectedio Connected Io
Published: 2023-08-04
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-33378?: Connected IO v2.1.0 and prior has an argument injection vulnerability in its AT command message in its communication protocol, enabling attackers to execute arbitrary OS commands on devices.
How severe is CVE-2023-33378?: CVE-2023-33378 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-33378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-33378?: CVE-2023-33378 affects Connectedio Connected Io. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-33378?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-33378 published?: CVE-2023-33378 was published on 2023-08-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:connectedio:connected_io:*:*:*:*:*:*:*:*

More vulnerabilities in Connectedio Connected Io

CVE-2023-33377 — Critical (CVSS 9.8): Connected IO v2.1.0 and prior has an OS command injection vulnerability in the set firewall command in part of its…
CVE-2023-33376 — Critical (CVSS 9.8): Connected IO v2.1.0 and prior has an argument injection vulnerability in its iptables command message in its…
CVE-2023-33375 — Critical (CVSS 9.8): Connected IO v2.1.0 and prior has a stack-based buffer overflow vulnerability in its communication protocol, enabling…
CVE-2023-33374 — Critical (CVSS 9.8): Connected IO v2.1.0 and prior has a command as part of its communication protocol allowing the management platform to…
CVE-2023-33373 — Critical (CVSS 9.8): Connected IO v2.1.0 and prior keeps passwords and credentials in clear-text format, allowing attackers to exfiltrate…
CVE-2023-33372 — Critical (CVSS 9.8): Connected IO v2.1.0 and prior uses a hard-coded username/password pair embedded in their device's firmware used for…

All CVEs affecting Connectedio Connected Io →

Other CWE-88 (Argument Injection) vulnerabilities

CVE-2026-57572 — Critical (CVSS 10.0): Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, the Docker API server accepted…
CVE-2026-40281 — Critical (CVSS 10.0): Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint…
CVE-2023-6269 — Critical (CVSS 10.0): An argument injection vulnerability has been identified in the administrative web interface of the Atos Unify…
CVE-2007-0882 — Critical (CVSS 10.0): Argument injection vulnerability in the telnet daemon (in.telnetd) in Solaris 10 and 11 (SunOS 5.10 and 5.11)…
CVE-2004-0480 — Critical (CVSS 10.0): Argument injection vulnerability in IBM Lotus Notes 6.0.3 and 6.5 allows remote attackers to execute arbitrary code via…
CVE-1999-0113 — Critical (CVSS 10.0): Some implementations of rlogin allow root access if given a -froot parameter.

Browse all CWE-88 (Argument Injection) vulnerabilities →