CVE-2016-6539 | TrackR Bravo MAC address can be exposed in close proximity and used to obtain the device ID

Exp

The Trackr device ID is constructed of a manufacturer identifier of four zeroes followed by the BLE MAC address in reverse. The MAC address can be obtained by being in close proximity to the Bluetooth device, effectively exposing the device ID. The ID can be used to track devices. Updated apps, version 5.1.6 for iOS and 2.2.5 for Android, have been released by the vendor to address the vulnerabilities in CVE-2016-6538, CVE-2016-6539, CVE-2016-6540 and CVE-2016-6541.

Published: 2018-07-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-6539 is rated Exploit Available (53.3/100): CVSS Low severity, with medium exploitation likelihood (EPSS 1.29%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.07% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2016-6539

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-6539

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 0.22% 1.29% +1.07%
2 2025-03-30 0.31% 0.22% -0.09%
3 2025-03-29 — 0.31% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-6539

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.5 3.0 LOW
CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 1.4 [email protected]
3.3 2.0 LOW
AV:A/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 6.5 2.9 [email protected]

Weakness enumeration for CVE-2016-6539

Affected software / configurations for CVE-2016-6539

Vendor Product Version Raw CPE
thetrackr trackr_firmware < 2.2.5 cpe:2.3:o:thetrackr:trackr_firmware:*:*:*:*:*:android:*:*
thetrackr trackr_firmware < 5.1.6 cpe:2.3:o:thetrackr:trackr_firmware:*:*:*:*:*:iphone_os:*:*

References for CVE-2016-6539

URL Tags
http://www.securityfocus.com/bid/93874 Third Party Advisory VDB Entry
https://blog.rapid7.com/2016/10/25/multiple-bluetooth-low-energy-ble-tracker-vulnerabilities/ Exploit Technical Description Third Party Advisory
https://www.kb.cert.org/vuls/id/617567 Third Party Advisory US Government Resource
https://www.kb.cert.org/vuls/id/TNOY-AF3KCZ Third Party Advisory US Government Resource
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