Vulnerability-Lookup

CVE-2026-28521 (GCVE-0-2026-28521)

Vulnerability from cvelistv5 – Published: 2026-03-15 13:35 – Updated: 2026-03-16 14:20

Title

arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure

Summary

arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the TuyaIoT component. An attacker who hijacks or controls the Tuya cloud service can issue malicious DP event data to victim devices, causing out-of-bounds memory access that may result in information disclosure or a denial-of-service condition.

Severity

7 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

7.7 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-16 14:13 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://src.tuya.com/announcement/32	vendor-advisory
https://github.com/tuya/arduino-TuyaOpen	product
https://www.vulncheck.com/advisories/arduino-tuya…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Tuya	arduino-TuyaOpen	Affected: 0 , < 1.2.1 (semver)	guessed

Date Public

2026-03-11 00:00

Credits

Maxime ROSSI BELLOM

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-28521

Vulnerability from fkie_nvd - Published: 2026-03-16 14:19 - Updated: 2026-06-17 10:28

Severity

7.7 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Summary

References

URL	Tags
disclosure@vulncheck.com	https://github.com/tuya/arduino-TuyaOpen	Product
disclosure@vulncheck.com	https://src.tuya.com/announcement/32	Vendor Advisory
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/arduino-tuyaopen-tuyaiot-out-of-bounds-memory-read-information-disclosure	Third Party Advisory

Impacted products

	Vendor	Product	Version
	tuya	arduino-tuyaopen	*

JSON

To clipboard

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        {
          "product": "arduino-TuyaOpen",
          "vendor": "Tuya",
          "versions": [
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    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/arduino-tuyaopen-tuyaiot-out-of-bounds-memory-read-information-disclosure"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-R4WM-392X-HFG5

Vulnerability from github – Published: 2026-03-16 15:30 – Updated: 2026-03-16 15:30

Details

Severity

7.7 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

7.0 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-28521"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-16T14:19:28Z",
    "severity": "HIGH"
  },
  "details": "arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the TuyaIoT component. An attacker who hijacks or controls the Tuya cloud service can issue malicious DP event data to victim devices, causing out-of-bounds memory access that may result in information disclosure or a denial-of-service condition.",
  "id": "GHSA-r4wm-392x-hfg5",
  "modified": "2026-03-16T15:30:42Z",
  "published": "2026-03-16T15:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28521"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tuya/arduino-TuyaOpen"
    },
    {
      "type": "WEB",
      "url": "https://src.tuya.com/announcement/32"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/arduino-tuyaopen-tuyaiot-out-of-bounds-memory-read-information-disclosure"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-28521 (GCVE-0-2026-28521)

FKIE_CVE-2026-28521

GHSA-R4WM-392X-HFG5

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Sightings

Nomenclature

Related by attack behaviour