CVE-2020-9438

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-23 · updated 2026-06-17
Weakness: CWE-294

Description

Tinxy Door Lock with firmware before 3.2 allow attackers to unlock a door by replaying an Unlock request that occurred when the attacker was previously authorized. In other words, door-access revocation is mishandled.

Affected products

Tinxy Smart Wifi Door Lock Firmware: before 3.2 — fixed in 3.2

How to fix

Upgrade to a fixed version: Tinxy Smart Wifi Door Lock Firmware 3.2. Check the vendor advisory for mitigations.

References

https://medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06
https://medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06

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