SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-8862

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

LOW 3.1EPSS 0.57%

Does this matter?

Lower severity and a low EPSS score (0.57%). 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, an improper authentication 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
0.57% probability · 47th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-287
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: 0.57%27 October 202627 October 2026

EPSS 0.6% 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.