{"id":"CVE-2026-28521","aliases":["EUVD-2026-12228","GHSA-r4wm-392x-hfg5"],"status":"published","title":"arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure","description":"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":{"version":"4.0","score":7,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00239,"percentile":0.15057,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-03-15T13:35:46Z","modified":"2026-10-28T11:10:08Z","products":[{"vendor":"tuya","product":"arduino-tuyaopen"}],"references":[{"url":"https://src.tuya.com/announcement/32","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"https://github.com/tuya/arduino-TuyaOpen","tags":["product","Product","package"]},{"url":"https://www.vulncheck.com/advisories/arduino-tuyaopen-tuyaiot-out-of-bounds-memory-read-information-disclosure","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28521","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r4wm-392x-hfg5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28521.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-28521","title":"arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure","description":"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.","status":"published","published":"2026-03-15T13:35:46.217Z","modified":"2026-03-16T14:20:19.227Z","cvss":[{"version":"4.0","score":7,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:02.290587Z"}],"euvd":[{"id":"EUVD-2026-12228","description":"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.","status":"published","published":"2026-03-15T13:35:46Z","modified":"2026-03-16T14:20:19Z","cvss":[{"version":"4.0","score":7,"vector":"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","level":"high"}],"updated_at":"2026-11-02T19:25:34.563327Z"}],"ghsa":[{"id":"GHSA-r4wm-392x-hfg5","title":"arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the...","description":"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.","status":"published","published":"2026-03-16T15:30:42Z","modified":"2026-03-16T15:30:55Z","cvss":[{"version":"4.0","score":7,"vector":"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","level":"high"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:06:38.778049Z"}],"nvd":[{"id":"CVE-2026-28521","description":"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.","status":"published","published":"2026-03-16T14:19:28.557Z","modified":"2026-06-17T10:28:47.503Z","cvss":[{"version":"4.0","score":7,"vector":"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","level":"high","assessor":"secondary"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:09.358914Z"}],"osv":[{"id":"CVE-2026-28521","title":"arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure","description":"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.","status":"published","published":"2026-03-15T13:35:46.217Z","modified":"2026-10-28T11:10:08.30536788Z","cvss":[{"version":"4.0","score":7,"vector":"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","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:45:00.530889Z"}]}}