CVE-2026-28519 json
arduino-TuyaOpen DnsServer Heap-Based Buffer Overflow Remote Code Execution
published 2026-03-15 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12226
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
arduino-TuyaOpen before version 1.2.1 contains a heap-based buffer overflow vulnerability in the DnsServer component. An attacker on the same local area network who controls the LAN DNS server can send malicious DNS responses to overflow the heap buffer, potentially allowing execution of arbitrary code on affected embedded devices.
Patch / fix
- Tuya arduino-TuyaOpen 1.2.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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-122 Heap-based Buffer Overflow
References
-
src.tuya.com
/announcement/32
vendor-advisory
-
github.com
/tuya/arduino-TuyaOpen
product
-
vulncheck.com
/advisories/arduino-tuyaopen-dnsserver-heap-based-buffer-overflow-remote-code-execution
third-party-advisory
Sources
- CVE List CVE-2026-28519
- NVD CVE-2026-28519
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