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CVE-2017-16778 Details

Description

An access control weakness in the DTMF tone receiver of Fermax Outdoor Panel allows physical attackers to inject a Dual-Tone-Multi-Frequency (DTMF) tone to invoke an access grant that would allow physical access to a restricted floor/level. By design, only a residential unit owner may allow such an access grant. However, due to incorrect access control, an attacker could inject it via the speaker unit to perform an access grant to gain unauthorized access, as demonstrated by a loud DTMF tone representing '1' and a long '#' (697 Hz and 1209 Hz, followed by 941 Hz and 1477 Hz).

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.6 MEDIUMVector:CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/breaktoprotect/CVE-2017-16778-Intercom-DTMF-Injection	CVE	Third Party Advisory
https://github.com/breaktoprotect/CVE-2017-16778-Intercom-DTMF-Injection	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]

Affected Products

Product	Versions
fermax outdoor panel firmware	All versions
CPE cpe:2.3:o:fermax:outdoor_panel_firmware:-:::::::* Remediation No remediation found in references.
fermax outdoor panel	All versions
CPE cpe:2.3:h:fermax:outdoor_panel:-:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 8, 2020	Initial Analysis	[email protected]
Dec 25, 2019	CVE Modified	[email protected]