CVE-2020-9438
Tinxy Door Lock with firmware before 3.2 allow attackers to unlock a door by replaying an Unlock...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-9438- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-9438- Updated
- 2026-11-02
EUVDEUVD-2020-30258 No score
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.
- Record
EUVD-2020-30258- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r8j8-hmfc-5qh8
Tinxy Door Lock with firmware before 3.2 allow attackers to unlock a door by replaying an Unlock...
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.
- Record
GHSA-r8j8-hmfc-5qh8- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-9438 is a medium vulnerability (CVSS 5.9) in Tinxy Smart Wifi Door Lock Firmware, published June 23, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.67%, the 52nd percentile. No source names a fixed version.
References
medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06
nvd.nist.gov/vuln/detail/CVE-2020-9438
github.com/advisories/GHSA-r8j8-hmfc-5qh8