operations/attestation/AttestationTask.kt in the Tangem SDK before 5.18.3 for Android has a logic flow in offline wallet attestation (genuineness check) that causes verification results to be disregarded during the first scan of a card. Exploitation may not have been possible.
CVE ID: CVE-2025-27839
CVSS Base Severity: LOW
CVSS Base Score: 3.2
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
Vendor: Tangem
Product: SDK
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 3.84% (scored less or equal to compared to others)
EPSS Date: 2025-04-05 (when was this score calculated)