A specially crafted message can be sent to the TTLock App that downgrades the encryption protocol used for communication, and can be utilized to compromise the lock, such as through revealing the unlockKey field.
Severity
CVSS 3.1
7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)