CVE-2025-32878Public exploitNetwork attack vector

API token theft via unvalidated TLS certificate

Published Jun 20, 2025 · Updated Jun 20, 2025

Improper certificate validation in COROS PACE 3 firmware 3.1008.0 and earlier allows attackers to steal API tokens through intercepted WLAN traffic. The firmware-metadata request accepts a self-signed X.509 server certificate during the TLS handshake, exposing the access token and request body to a TLS proxy. An unauthenticated attacker must control the watch's WLAN traffic during an update check; that position permits reading or altering the assigned account's HTTPS exchange.

CVSS severity9.8
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in COROS PACE 3 firmware 3.1008.0 and earlier allows attackers to steal API tokens through intercepted WLAN traffic. The firmware-metadata request accepts a self-signed X.509 server certificate during the TLS handshake, exposing the access token and request body to a TLS proxy. An unauthenticated attacker must control the watch's WLAN traffic during an update check; that position permits reading or altering the assigned account's HTTPS exchange.

The record

CVE
CVE-2025-32878
Published
Jun 20, 2025
Updated
Jun 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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