CVE-2025-27839 Business logic in SDK
A logic flaw in the Tangem Android SDK may allow bypassing offline wallet attestation checks during the first card scan, potentially undermining genuineness verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27839?
CVE-2025-27839 is a low-severity vulnerability in Tangem SDK, published on 7 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-1025
Which versions are affected by CVE-2025-27839?
How do I fix CVE-2025-27839?
No fix has been published for CVE-2025-27839 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-27839 being exploited?
There is no known exploitation of CVE-2025-27839 in the wild and no public exploit code.
Sources
Also known as GHSA-jmqj-768c-pw4r.