Summary
Successful exploitation of these vulnerabilities could allow an attacker to remotely control other users' smart home devices, intercept sensitive data, and hijack sessions.
Vulnerabilities 4
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Medium 5.8
The YoSmart YoLink API through 2025-10-02 uses an endpoint URL that is derived from a device's MAC address along with a…
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Medium 4.9
The YoSmart YoLink MQTT broker through 2025-10-02 does not enforce sufficient authorization controls to prevent cross-a…
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Medium 4.7
Components of the YoSmart YoLink ecosystem through 2025-10-02 leverage unencrypted MQTT to communicate over the interne…
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Low 3.5
The YoSmart YoLink application through 2025-10-02 has session tokens with unexpectedly long lifetimes.
Revision history
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#1
Initial Publication
References
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ICSA Advisory ICSA-26-013-03 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-26-013-03
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Recommended Practices
https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
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Recommended Practices
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
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Recommended Practices
https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
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Recommended Practices
https://www.cisa.gov/topics/industrial-control-systems
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Recommended Practices
https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf
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Recommended Practices
https://www.cisa.gov/uscert/ncas/tips/ST04-014
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Recommended Practices
https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01
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Recommended Practices
https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b
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Recommended Practices
https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing
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Recommended Practices
https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks