High severity7.5NVD Advisory· Published Jun 4, 2021· Updated Jun 17, 2026
CVE-2021-33838
CVE-2021-33838
Description
Luca through 1.7.4 on Android allows remote attackers to obtain sensitive information about COVID-19 tracking because requests related to Check-In State occur shortly after requests for Phone Number Registration.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3Patches
Vulnerability mechanics
References
4- www.youtube.com/playlistnvdExploitThird Party Advisory
- github.com/mame82/misc/blob/master/luca_traceIds.mdnvdThird Party Advisory
- luca-app.de/securityoverview/properties/objectives.htmlnvdVendor Advisory
- www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bundesnotbremsenvdThird Party Advisory
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