Information disclosure in Fitbit Charge 2
CVE-2014-10374
On Fitbit activity-tracker devices, certain addresses never change. According to the popets-2019-0036.pdf document, this leads to "permanent trackability" and "considerable privacy concerns" without a user-accessible anonymization feature. The devices, such as Charge 2, transmit Bluetooth Low Energy (BLE) advertising packets with a TxAdd flag indicating random addresses, but the addresses remain constant. If devices come within BLE range at one or more locations where an adversary has set up passive sniffing, the adversary can determine whether the same device has entered one of these locations.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- petsymposium.org/2019/files/papers/issue3/popets-2019-0036.pdf (Third Party Advisory)
- twitter.com/TedOnPrivacy/status/1151390589990187008 (Third Party Advisory)
Frequently asked questions
- What is CVE-2014-10374?
- CVE-2014-10374 is a medium-severity vulnerability in Fitbit Charge 2, classified under Information Disclosure. CVSS score: 6.5/10. Published 2019-07-15.
- How severe is CVE-2014-10374?
- Medium severity. CVSS v3 base score is 6.5 out of 10.