CVE-2025-32878

An issue was discovered on COROS PACE 3 devices through 3.0808.0

Critical · published June 20, 2025

CVSS v3.1
9.8
EPSS
0%
Percentile
34.2
In the wild
Unconfirmed
What it is

🔥 A sneaky lack of TLS validation on COROS PACE 3 devices could let attackers eavesdrop on your watch’s communication! Think of your COROS watch as a secure conversation in a café. If the barista (the watch) delivers your order (firmware updates) without verifying the identity of the customer (the server), anyone with a listening device can intercept and change your order without you knowing! This vulnerability is absolutely devastating! An attacker could capture sensitive data, such as your API access token, allowing them to hijack your account and manipulate your device. Imagine the chaos if someone could take control of your watch while you’re out for a run or on a hike!

Put simply

Think of your COROS watch as a secure conversation in a café. If the barista (the watch) delivers your order (firmware updates) without verifying the identity of the customer (the server), anyone with a listening device can intercept and change your order without you knowing! CVE-2025-32878 affects COROS PACE 3 devices, as it fails to validate the X.509 server certificate during the TLS handshake when requesting firmware updates. This oversight allows an attacker to leverage a machine-in-the-middle position to eavesdrop and manipulate the HTTPS communication.

What to do

This vulnerability is absolutely devastating! An attacker could capture sensitive data, such as your API access token, allowing them to hijack your account and manipulate your device. Imagine the chaos if someone could take control of your watch while you’re out for a run or on a hike! Immediately patch your COROS PACE 3 device to the latest firmware version to address this critical flaw. Additionally, verify that your network is secure and consider implementing a VPN to add an extra layer of protection while connected. 🛡️ You've got this! Follow these steps, and you'll be well on your way to securing your device! 🚀

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00410 · 34.2th percentile
Published
2025-06-20T00:00Z
EPSS history
Timeline
  • 20 JUN 00:00Z
    An issue was discovered on COROS PACE 3 devices through 3.0808.0
    cvelistv5