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CVE-2020-12119

HIGH
8.1
CVSS Score
Published: July 2, 2020 at 02:42 PM UTC
Updated: June 17, 2026 at 02:51 AM UTC
1 product affected across 1 vendorLedger Live

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Severity
HIGH8.1
Exploit prediction
EPSS 0.6%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ledger Live· Ledger
95%
v < 2.7.0
Affected range stops below 2.7.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
https://donjon.ledger.com/lsb/012/

CVSS

8.1HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345

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