HIGH

CVE-2021-33838

CVSS v3

7.5

HIGH

EPSS Score

2.8 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-33838 yet.

Full record on NVD

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.

Technical details

Published: 2021-06-04

Frequently asked questions

What is CVE-2021-33838?

Is CVE-2021-33838 actively exploited?

Active exploitation of CVE-2021-33838 has not been confirmed. Its EPSS score was 2.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-33838?

CVE-2021-33838 has a CVSS v3 base score of 7.5 (HIGH severity).

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