SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-8864

In ATI Systems Emergency Mass Notification Systems (HPSS16, HPSS32, MHPSS, and ALERT4000) devices, a missing encryption of sensitive data vulnerability caused by specially crafted malicious radio transmissions may allow an attacker to remotely trigger…

LOW 3.1EPSS 0.17%

Does this matter?

Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.

Description

In ATI Systems Emergency Mass Notification Systems (HPSS16, HPSS32, MHPSS, and ALERT4000) devices, a missing encryption of sensitive data vulnerability caused by specially crafted malicious radio transmissions may allow an attacker to remotely trigger false alarms.

CVSS 3.0
3.1 LOWCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
0.17% probability · 7th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-311
Affected
atisystem/hpss16 firmware · atisystem/hpss32 firmware · atisystem/mhpss firmware · atisystem/alert4000 firmware
Source
ics-cert@hq.dhs.gov
EPSS trend
0%3%5%27 October 2026: 0.17%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.

References

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