Session establishment lock-up during replay of CASE Sigma1 messages
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
An issue in the Certificate Authenticated Session Establishment (CASE) protocol for establishing secure sessions between two devices, as implemented in the Matter protocol versions before Matter 1.1 allows an attacker to replay manipulated CASE Sigma1 messages to make the device unresponsive until the device is power-cycled.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Connectivity Standards Alliance · Matter