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 false alarms.

Published: 2018-05-25 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-8864 is rated Low Risk (15.1/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.18%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-8864

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.18% +0.15%
2 2025-03-17 0.06% 0.02% -0.04%
3 2023-03-07 — 0.06% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-8864

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.1 3.0 LOW
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 1.4 [email protected]
2.9 2.0 LOW
AV:A/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 5.5 2.9 [email protected]

Weakness enumeration for CVE-2018-8864

Affected software / configurations for CVE-2018-8864

Vendor Product Version Raw CPE
atisystem hpss16_firmware — cpe:2.3:o:atisystem:hpss16_firmware:-:*:*:*:*:*:*:*
atisystem hpss32_firmware — cpe:2.3:o:atisystem:hpss32_firmware:-:*:*:*:*:*:*:*
atisystem mhpss_firmware — cpe:2.3:o:atisystem:mhpss_firmware:-:*:*:*:*:*:*:*
atisystem alert4000_firmware — cpe:2.3:o:atisystem:alert4000_firmware:-:*:*:*:*:*:*:*

References for CVE-2018-8864

URL Tags
http://www.securityfocus.com/bid/103721 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-18-100-01 Mitigation Third Party Advisory US Government Resource
cvelogic Threat Intelligence