PatchTheCVECVE-2023-33375: Connected IO v2.1.0 and prior has a stack-based buffer overflow vulnerability in its communication protocol, e
CVE-2023-33375 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 stack-based buffer overflow vulnerability in its communication protocol, enabling attackers to take control over devices.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 42%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2023-08-04 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2023-33375?
connected io: upgrade to newer than 2.1.0. Exact commands for each OS are on this page.
Is CVE-2023-33375 being exploited?
CVE-2023-33375 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-2023-33375 affect?
CVE-2023-33375 affects connected io. Severity is critical (CVSS 9.8). Connected IO v2.1.0 and prior has a stack-based buffer overflow vulnerability in its communication protocol, enabling attackers to take control over devices.
How urgent is CVE-2023-33375?
Priority 54/100. Critical severity; Remotely exploitable, no login, no user action
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