Which versions of Cloud Api are affected by EUVD-2026-18845?

CVE-2026-32646 is a high-severity authentication bypass in Gardyn Cloud API that allows unauthenticated attackers to access administrative device management functions over the network, potentially…. A patch is available.

How to fix or mitigate EUVD-2026-18845?

Within 24 hours: Identify all Gardyn Cloud API instances in use and verify patch availability status from Gardyn vendor advisory. Within 7 days: Apply vendor-released patch to all affected Gardyn Cloud API deployments and validate successful application. Within 30 days: Conduct network segmentation audit to restrict API access to trusted networks only and implement API gateway authentication controls as defense-in-depth; review device management logs for signs of unauthorized access during the patching window.

Cloud Api EUVD-2026-18845

Q: What is the CVSS score of EUVD-2026-18845?

EUVD-2026-18845 has a CVSS 4.0 base score of 8.7 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.1%.

| CVE-2026-32646 HIGH

Missing Authentication for Critical Function (CWE-306)

2026-04-03 icscert

GHSA-rj89-w4p6-78wv

Authentication Bypass Cloud Api

8.7

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

8.7 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

Apr 22, 2026 - 18:37 vuln.today

cvss_changed

Analysis Updated

Apr 16, 2026 - 06:07 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

2.12.2026

EUVD ID Assigned

Apr 03, 2026 - 20:45 euvd

EUVD-2026-18845

Analysis Generated

Apr 03, 2026 - 20:45 vuln.today

CVE Published

Apr 03, 2026 - 20:15 nvd

HIGH 8.7

DescriptionCVE.org

A specific administrative endpoint is accessible without proper authentication, exposing device management functions.

AnalysisAI

Unauthenticated remote access to administrative endpoints in Gardyn Cloud API exposes device management functions to network attackers. The CVSS:4.0 vector (AV:N/AC:L/PR:N) confirms network-reachable exploitation requiring no authentication or user interaction, with high confidentiality impact. EPSS data unavailable, but authentication bypass vulnerabilities (CWE-306) are frequently targeted when exposed on internet-facing APIs. CISA ICS-CERT advisory indicates IoT/OT context, suggesting potential for unauthorized device control. No confirmed active exploitation (not on CISA KEV) and no public exploit identified at time of analysis.

Technical ContextAI

The vulnerability stems from CWE-306 (Missing Authentication for Critical Function), where administrative endpoints in Gardyn's Cloud API lack proper authentication controls. The affected product (cpe:2.3:a:gardyn:cloud_api) appears to be the backend management interface for Gardyn's smart indoor gardening systems. Authentication bypass flaws at the API layer typically result from misconfigured route handlers, missing middleware validation, or direct object reference vulnerabilities that allow unauthenticated callers to invoke privileged operations. In IoT cloud platforms, administrative endpoints often control device provisioning, configuration updates, firmware management, and telemetry access-all of which become exposed when authentication checks are absent. The CVSS vector indicates network-based attack surface with low complexity, meaning exploitation requires only HTTP client capabilities and knowledge of endpoint paths, which may be discoverable through API documentation, brute-force enumeration, or reverse engineering of mobile applications.

RemediationAI

Vendor-released patch available per CISA advisory ICSA-26-055-03. Organizations operating Gardyn Cloud API infrastructure should immediately consult the vendor security advisory at https://mygardyn.com/security/ for specific patch versions and deployment instructions. The CISA advisory at https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03 and associated CSAF document at https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.json contain structured remediation guidance including exact patched versions, though specific version numbers are not provided in the analyzed dataset. Immediate compensating controls include restricting network access to administrative endpoints through firewall rules, implementing IP allowlisting for known management clients, deploying API gateway authentication layers as an interim control, and monitoring access logs for unauthorized administrative endpoint requests. End users of Gardyn devices should verify their systems have received automatic cloud-side updates, as the vulnerability resides in backend infrastructure rather than device firmware. Review authentication logs for the exposure window to identify potential unauthorized access attempts.