CVE-2026-28522

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Source
https://cve.org/CVERecord?id=CVE-2026-28522
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28522.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-28522
Published
2026-03-15T13:36:52.798Z
Modified
2026-07-22T00:33:49.503081Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service
Details

arduino-TuyaOpen before version 1.2.1 contains a null pointer dereference vulnerability in the WiFiUDP component. An attacker on the same local area network can send a large volume of malicious UDP packets that trigger a null pointer dereference, resulting in a denial-of-service condition.

Database specific 
{
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28522.json",
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / github.com/tuya/arduino-tuyaopen

Affected ranges

Type
GIT
Repo
https://github.com/tuya/arduino-tuyaopen
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1712806afe66fa2abe787ddf8cdb0e53f49ed96c
Database specific 
{
    "cpe": "cpe:2.3:a:tuya:arduino-tuyaopen:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.2.1"
        }
    ]
}

Affected versions

0.*
0.0.2
0.0.3
0.0.4
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.1.7
1.1.8
1.1.9
1.2.0
Other
global

Database specific

vanir_signatures_modified 
"2026-07-22T00:33:49Z"
vanir_signatures 
[
    {
        "signature_type": "Function",
        "target": {
            "file": "cores/tuya_open/tuya_app_main.c",
            "function": "tuya_app_main"
        },
        "deprecated": false,
        "source": "https://github.com/tuya/arduino-tuyaopen/commit/1712806afe66fa2abe787ddf8cdb0e53f49ed96c",
        "id": "CVE-2026-28522-15a3642e",
        "signature_version": "v1",
        "digest": {
            "function_hash": "35339061321589632932171406056722236442",
            "length": 241.0
        }
    },
    {
        "signature_type": "Function",
        "target": {
            "file": "cores/tuya_open/tuya_app_main.c",
            "function": "app_open_sdk_init"
        },
        "deprecated": false,
        "source": "https://github.com/tuya/arduino-tuyaopen/commit/1712806afe66fa2abe787ddf8cdb0e53f49ed96c",
        "id": "CVE-2026-28522-20965f93",
        "signature_version": "v1",
        "digest": {
            "function_hash": "339681762992278317836038670379132180264",
            "length": 624.0
        }
    },
    {
        "signature_type": "Line",
        "target": {
            "file": "libraries/TuyaIoT/src/TuyaIoT.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/tuya/arduino-tuyaopen/commit/1712806afe66fa2abe787ddf8cdb0e53f49ed96c",
        "id": "CVE-2026-28522-86c1f5a8",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
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                "154701627822890261176436257489988882276",
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            "threshold": 0.9
        }
    },
    {
        "signature_type": "Function",
        "target": {
            "file": "libraries/TuyaIoT/src/TuyaIoT.cpp",
            "function": "TuyaIoTCloudClass::uartAuthInit"
        },
        "deprecated": false,
        "source": "https://github.com/tuya/arduino-tuyaopen/commit/1712806afe66fa2abe787ddf8cdb0e53f49ed96c",
        "id": "CVE-2026-28522-a532c698",
        "signature_version": "v1",
        "digest": {
            "function_hash": "228376957563261250250323542310764060167",
            "length": 141.0
        }
    },
    {
        "signature_type": "Function",
        "target": {
            "file": "cores/tuya_open/tuya_app_main.c",
            "function": "ArduinoThread"
        },
        "deprecated": false,
        "source": "https://github.com/tuya/arduino-tuyaopen/commit/1712806afe66fa2abe787ddf8cdb0e53f49ed96c",
        "id": "CVE-2026-28522-a9ee429d",
        "signature_version": "v1",
        "digest": {
            "function_hash": "93408165737688110381178319758432194100",
            "length": 412.0
        }
    },
    {
        "signature_type": "Line",
        "target": {
            "file": "cores/tuya_open/tuya_app_main.c"
        },
        "deprecated": false,
        "source": "https://github.com/tuya/arduino-tuyaopen/commit/1712806afe66fa2abe787ddf8cdb0e53f49ed96c",
        "id": "CVE-2026-28522-de242646",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "111002027523529430165214499337533858255",
                "321222107020963642537475106455708529566",
                "114793625497611877257020758582591167117",
                "85147159063347037920855839645972837721",
                "122876489708497389863253870811302714898",
                "186633455858800647837972764082670996163",
                "260018632668019599036932807639221307533",
                "243792348152715600219857031707048251536",
                "131778133239169255758495386960328441692",
                "258623905542365265942026793827399340622",
                "290339756397933325316802769427471948747",
                "211201213007954943571599682875827404419",
                "136564073643278925125167076826882036317",
                "40438577432183700989303279624905867037",
                "111136637917233513941512870603071453355",
                "161452998591767123238495747428234810561",
                "221521972120789712207169709268343971758",
                "311145983598839541522785901911962184078",
                "112047612856236419077163716352223227658"
            ],
            "threshold": 0.9
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28522.json"