What’s Vulnerable › Vulnerabilities
CVE-2020-12119
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-07-02 · updated 2026-06-17
- Weakness: CWE-345
Description
Ledger Live before 2.7.0 does not handle Bitcoin's Replace-By-Fee (RBF). It increases the user's balance with the value of an unconfirmed transaction as soon as it is received (before the transaction is confirmed) and does not decrease the balance when it is canceled. As a result, users are exposed to basic double spending attacks, amplified double spending attacks, and DoS attacks without user consent.
Affected products
- Ledger Live: before 2.7.0 — fixed in 2.7.0
How to fix
Upgrade to a fixed version: Ledger Live 2.7.0. Check the vendor advisory for mitigations.
References
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