How severe is CVE-2025-32878?

CVE-2025-32878 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-32878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-32878?

CVE-2025-32878 affects Yftech Coros Pace 3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-32878?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-32878 have an EU (EUVD) identifier?

Yes. CVE-2025-32878 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18754.

When was CVE-2025-32878 published?

CVE-2025-32878 was published on 2025-06-20 and last updated on 2026-06-17.

CVE-2025-32878

CVE-2025-32878 is a critical-severity vulnerability in Yftech Coros Pace 3 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18754
Weakness: CWE-295
Affected product: Yftech Coros Pace 3 Firmware
Published: 2025-06-20
Last modified: 2026-06-17

Description

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-the-middle position, using a TLS proxy and a self-signed certificate, to eavesdrop and manipulate the HTTPS communication. This could be abused, for example, for stealing the API access token of the assigned user account.

Frequently asked questions

What is CVE-2025-32878?: 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-the-middle position, using a TLS proxy and a self-signed certificate, to eavesdrop and manipulate the HTTPS communication. This could be abused, for example, for stealing the API access token of the assigned user account.
How severe is CVE-2025-32878?: CVE-2025-32878 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-32878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-32878?: CVE-2025-32878 affects Yftech Coros Pace 3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-32878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-32878 have an EU (EUVD) identifier?: Yes. CVE-2025-32878 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18754.
When was CVE-2025-32878 published?: CVE-2025-32878 was published on 2025-06-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:yftech:coros_pace_3_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Yftech Coros Pace 3 Firmware

CVE-2025-32880 — 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…
CVE-2025-32877 — Critical (CVSS 9.8): An issue was discovered on COROS PACE 3 devices through 3.0808.0. It identifies itself as a device without input or…
CVE-2025-48706 — Critical (CVSS 9.1): An issue was discovered in COROS PACE 3 through 3.0808.0. Due to an out-of-bounds read vulnerability, sending a crafted…
CVE-2025-32879 — High (CVSS 8.8): An issue was discovered on COROS PACE 3 devices through 3.0808.0. It starts advertising if no device is connected via…
CVE-2025-48705 — High (CVSS 7.5): An issue was discovered in COROS PACE 3 through 3.0808.0. Due to a NULL pointer dereference vulnerability, sending a…
CVE-2025-32876 — Medium (CVSS 6.8): An issue was discovered on COROS PACE 3 devices through 3.0808.0. The BLE implementation of the COROS smartwatch does…

All CVEs affecting Yftech Coros Pace 3 Firmware →

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