SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-11399

SimpliSafe Original has Unencrypted Sensor Transmissions, which allows physically proximate attackers to obtain potentially sensitive information about the specific times when alarm-system events occur.

MEDIUM 4.3EPSS 0.23%

Does this matter?

Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.

Description

SimpliSafe Original has Unencrypted Sensor Transmissions, which allows physically proximate attackers to obtain potentially sensitive information about the specific times when alarm-system events occur.

CVSS 3.0
4.3 MEDIUMCVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
0.23% probability · 13th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-319
Affected
simplisafe/u9k-es1000 firmware · simplisafe/u9k-kr1 firmware · simplisafe/u9k-ms1000 firmware · simplisafe/u9k-wt1000 firmware
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 0.23%27 October 202627 October 2026

EPSS 0.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.