CVE-2026-28521 json
arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure
published 2026-03-15 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12228
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
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.
Patch / fix
- Tuya arduino-TuyaOpen 1.2.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.0 | 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 |
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| CNA | 4.0 | 7.0 | 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 |
Affected products
- Tuya arduino-TuyaOpen
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
src.tuya.com
/announcement/32
vendor-advisory
-
github.com
/tuya/arduino-TuyaOpen
product
-
vulncheck.com
/advisories/arduino-tuyaopen-tuyaiot-out-of-bounds-memory-read-information-disclosure
third-party-advisory
Sources
- CVE List CVE-2026-28521
- NVD CVE-2026-28521
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