{"id":55166,"date":"2025-06-26T07:59:27","date_gmt":"2025-06-26T07:59:27","guid":{"rendered":""},"modified":"2025-10-14T18:32:06","modified_gmt":"2025-10-15T00:32:06","slug":"cve-2025-32878-critical-vulnerability-in-coros-pace-3-devices-leads-to-potential-system-compromise","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-32878-critical-vulnerability-in-coros-pace-3-devices-leads-to-potential-system-compromise\/","title":{"rendered":"CVE-2025-32878: Critical Vulnerability in COROS PACE 3 Devices Leads to Potential System Compromise<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This blog post will discuss a critical vulnerability discovered in COROS PACE 3 devices, specifically affecting versions up to 3.0808.0. This vulnerability, designated as CVE-2025-32878, presents a significant risk due to its potential to compromise systems and leak sensitive data. As COROS PACE 3 devices are widely used in various sectors, the impact of this vulnerability is widespread<\/a>, affecting individual users, organizations, and even industries at large. The severity of this issue<\/a> necessitates immediate attention and mitigation.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-32878
\nSeverity: Critical (9.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

COROS PACE<\/a> 3 | Up to 3.0808.0<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability arises from the COROS PACE 3 devices’ firmware download<\/a> function, which connects the watch to a WLAN. Before downloading firmware files, the watch requests information about the firmware via<\/a> HTTPS from the back-end API. However, the X.509 server certificate within the TLS<\/a> handshake is not validated by the device. This leaves room for an attacker, who is in an active machine-in-the-middle position using a TLS proxy and a self-signed certificate<\/a>, to eavesdrop and manipulate the HTTPS communication. Consequently, the attacker can potentially steal the API access<\/a> token of the assigned user account.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

In essence, the attacker intercepts the communication between the device and server. A conceptual example could be depicted by the following pseudocode:<\/p>\n

\/\/ Interception of communication\nATTACKER_MACHINE -> DEVICE:\nSTART TLS HANDSHAKE\nDEVICE -> ATTACKER_MACHINE:\nSEND CLIENT HELLO\nATTACKER_MACHINE -> DEVICE:\nSEND SERVER HELLO, CERTIFICATE (Self-Signed), SERVER HELLO DONE\nDEVICE -> ATTACKER_MACHINE:\nCLIENT KEY EXCHANGE, CHANGE CIPHER SPEC, ENCRYPTED HANDSHAKE MESSAGE\nATTACKER_MACHINE -> DEVICE:\nCHANGE CIPHER SPEC, ENCRYPTED HANDSHAKE MESSAGE\n\/\/ Communication manipulation\nATTACKER_MACHINE -> BACKEND_API:\nGET \/firmware\/info HTTP\/1.1\nAuthorization: Bearer \nBACKEND_API -> ATTACKER_MACHINE:\n{ \"firmware\": { \"version\": \"3.0808.0\", \"url\": \"...\" } }\nATTACKER_MACHINE -> DEVICE:\n{ \"firmware\": { \"version\": \"3.0808.0\", \"url\": \"\" } }<\/code><\/pre>\n
This pseudocode demonstrates how the attacker intercepts the TLS handshake, manipulates the HTTPS communication, steals the API token, and potentially redirects the device to download malicious firmware<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This blog post will discuss a critical vulnerability discovered in COROS PACE 3 devices, specifically affecting versions up to 3.0808.0. This vulnerability, designated as CVE-2025-32878, presents a significant risk due to its potential to compromise systems and leak sensitive data. As COROS PACE 3 devices are widely used in various sectors, the impact of […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-55166","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t