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CVE-2025-32878: An issue was discovered on COROS PACE 3 devices through 3.0808.0

53
This week
CRITICAL 9.8REMOTEUPGRADE

CVE-2025-32878 is a critical-severity flaw (CVSS 9.8) affecting coros pace 3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered on COROS PACE 3 devices through 3.0808.0. It implements a function to connect the watch to a WLAN. This function is mainly for downloading firmware files. Before downloading firmware files, the watch requests some information about the firmware via HTTPS from the back-end API. However, the X.509 server certificate within the TLS handshake is not validated by the device. This allows an attacker within an active machine-in-t

Why this priority

  • Critical severity
  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.4% (top 65%)
CISA exploited listNo
WeaknessCWE-295
Published2025-06-20
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: yftech

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

yftech coros pace 3 firmware UPGRADE
Affected: <= 3.0808.0
Fixed in: newer than 3.0808.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-32878?

coros pace 3 firmware: upgrade to newer than 3.0808.0. Exact commands for each OS are on this page.

Is CVE-2025-32878 being exploited?

CVE-2025-32878 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-32878 affect?

CVE-2025-32878 affects coros pace 3 firmware. Severity is critical (CVSS 9.8). An issue was discovered on COROS PACE 3 devices through 3.0808.0. It implements a function to connect the watch to a WLAN. This function is mainly for downloading firmware files. Before downloading firmware files, the watch requests some in

How urgent is CVE-2025-32878?

Priority 53/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

References

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