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PatchSiren cyber security CVE debrief

CVE-2026-32646 Gardyn CVE debrief

CVE-2026-32646 is a HIGH-severity authentication bypass issue in Gardyn’s ecosystem. CISA’s advisory says a specific administrative endpoint is accessible without proper authentication, which exposes device management functions. The advisory was first published on 2026-02-24 and updated on 2026-04-02 with added vulnerabilities and revised mitigations.

Vendor
Gardyn
Product
<master.619
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-02-24
Original CVE updated
2026-07-02
Advisory published
2026-02-24
Advisory updated
2026-07-02

Who should care

Owners and administrators of Gardyn Home Kit and Studio devices, especially environments using the Gardyn mobile application and cloud-connected services. Security teams should also pay attention if these devices are internet-reachable or centrally managed.

Technical summary

The advisory describes an unauthenticated administrative endpoint exposure. The supplied CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, consistent with network-reachable access and high confidentiality impact, while integrity and availability impacts are not asserted in the source. The source notes also include SSVCv2/E:N/A:Y/2026-03-31T05:00:00.000000Z. CISA’s update lists affected Gardyn Home firmware, Gardyn Studio firmware, the Gardyn mobile application, and the Gardyn Cloud API in the advisory metadata, and recommends updated firmware/app versions as mitigation.

Defensive priority

High — prioritize patching and validating that only supported, current Gardyn app/firmware versions are in use.

Recommended defensive actions

  • Update the Gardyn home kit and studio devices to firmware master.622 or later, per the advisory.
  • Update the Gardyn mobile application to the most recent supported version.
  • Verify the current app and home firmware versions from within the Gardyn app.
  • Ensure devices have network connectivity so required firmware updates can be automatically downloaded and applied.
  • Review access to Gardyn-connected devices and services for any unnecessary exposure, especially from untrusted networks.
  • Monitor the CISA advisory and Gardyn security guidance for any further mitigation changes.

Evidence notes

CISA’s CSAF advisory ICSA-26-055-03 (CVE-2026-32646) states: “A specific administrative endpoint is accessible without proper authentication, exposing device management functions.” The advisory was initially published on 2026-02-24 and updated on 2026-04-02 (“Update A”). The supplied CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, which matches the listed score of 7.5 (High). The source corpus also includes an SSVCv2 note: E:N/A:Y/2026-03-31T05:00:00.000000Z. No KEV listing is indicated in the provided data.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-32646 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-32646

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-32646 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-32646

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-055-03.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.