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CVE-2023-33374: Connected IO v2.1.0 and prior has a command as part of its communication protocol allowing the management plat

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CRITICAL 9.8REMOTEUPGRADE

CVE-2023-33374 is a critical-severity flaw (CVSS 9.8) affecting connected io. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Connected IO v2.1.0 and prior has a command as part of its communication protocol allowing the management platform to specify arbitrary OS commands for devices to execute. Attackers abusing this dangerous functionality may issue all devices OS commands to execute, resulting in arbitrary remote command execution.

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance1.3% (top 29%)
CISA exploited listNo
WeaknessCWE-78
Published2023-08-04
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: connectedio

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

connectedio connected io UPGRADE
Affected: <= 2.1.0
Fixed in: newer than 2.1.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy connected-io || rpm -q connected-io || connected-io --version
2. UPGRADE to newer than 2.1.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade connected-io
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade connected-io
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-33374?

connected io: upgrade to newer than 2.1.0. Exact commands for each OS are on this page.

Is CVE-2023-33374 being exploited?

CVE-2023-33374 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-33374 affect?

CVE-2023-33374 affects connected io. Severity is 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 specify arbitrary OS commands for devices to execute. Attackers abusing this dangerous functionality may issue all devices

How urgent is CVE-2023-33374?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

References

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