In ATI Systems Emergency Mass Notification Systems (HPSS16, HPSS32, MHPSS, and ALERT4000) devices, a missing encryption of sensitive data v…

published 2018-05-25 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20472

cvss: 3.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-18-100-01 updated 2018-04-10 cvss 5.3

ATI Systems Emergency Mass Notification Systems

Acoustic Technology, Inc. (ATI Systems) ATI Emergency Mass Notification Systems HPSS16, HPSS32, MHPSS, ALERT4000
affected: mitigation “ATI recommends that, where feasible, simple voice radios be replaced with digital P-25 (APCO) radios, which provide highly secure encrypted links.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	3.1	CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	2.0	2.9	AV:A/AC:M/Au:N/C:N/I:P/A:N

Affected products

Acoustic Technology, Inc. (ATI Systems) ATI Emergency Mass Notification Systems

Classification

Weakness

CWE-311 Missing Encryption of Sensitive Data

References

securityfocus.com /bid/103721
vdb-entry, third-party-advisory
ics-cert.us-cert.gov /advisories/ICSA-18-100-01
mitigation, third-party-advisory, us-government-resource

Sources

CVE List CVE-2018-8864
NVD CVE-2018-8864

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary