Medium severity6.5NVD Advisory· Published Apr 27, 2020· Updated Jun 17, 2026
CVE-2020-12270
CVE-2020-12270
Description
React Native Bluetooth Scan in Bluezone 1.0.0 uses six-character alphanumeric IDs, which might make it easier for remote attackers to interfere with COVID-19 contact tracing by using many IDs. NOTE: the vendor disputes the relevance of this report because the recipient of an F1 alert will know it was a false alert if contact-history comparison fails (i.e., an F0 is not actually part of the contact history obtained from the device of this recipient, or this recipient is not actually part of the contact history obtained from the device of an F0)
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Bluezone/Bluetooth Scandescription
Patches
Vulnerability mechanics
References
7- vnhacker.blogspot.com/2020/04/vietnams-contact-tracing-app_26.htmlnvdExploitThird Party Advisory
- github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/CHANGELOG.mdnvdRelease NotesThird Party Advisory
- github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/package.jsonnvdThird Party Advisory
- github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/AndroidManifest.xmlnvdThird Party Advisory
- github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/BluezonerIdGenerator.javanvdThird Party Advisory
- github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/TraceCovidModule.javanvdThird Party Advisory
- bluezone.ai/CVEnvd
News mentions
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