CVE-2025-32877
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn issue was discovered on COROS PACE 3 devices through 3.0808.0. It identifies itself as a device without input or output capabilities, which results in the use of the Just Works pairing method. This method does not implement any authentication, which therefore allows machine-in-the-middle attacks. Furthermore, this lack of authentication allows attackers to interact with the device via BLE without requiring prior authorization.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe COROS PACE 3 fitness tracker (firmware up to 3.0808.0) misidentifies itself as a device lacking input/output capabilities, forcing the BLE stack to use the 'Just Works' pairing method. This method provides no authentication, enabling machine-in-the-middle attacks and allowing unauthenticated attackers to send arbitrary BLE commands to the device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 3.0808.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check COROS PACE 3 firmware versionOpen the COROS mobile app, connect to your PACE 3 device, and navigate to Settings > System > About to view the installed firmware version. Alternatively, check the device system settings directly if accessible.Affected if The displayed firmware version is 3.0808.0 or any version lower (e.g., 3.0807.0, 3.07xx, etc.)
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Confirm BLE pairing behaviorUse a BLE debugging tool (such as nRF Connect or similar) to examine the BLE GATT services advertised by the PACE 3, specifically checking the Device Information Service for input/output capability flags.Affected if The device reports no input/output capabilities, indicating it will default to Just Works BLE pairing with no authentication requirement.
Your COROS PACE 3 is affected if the installed firmware version is 3.0808.0 or lower, as this firmware forces unauthenticated Just Works BLE pairing.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUntil COROS releases a firmware update implementing proper BLE authentication, users should avoid pairing the device in public or untrusted environments and consider disabling BLE when not in use. Monitor for vendor security advisories.
- Consultation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-32877 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-32877 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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