CVE-2020-12119: Ledger Live before 2.7.0 does not handle Bitcoin's Replace-By-Fee (RBF)

Q: How do I fix CVE-2020-12119?

ledger live: upgrade to 2.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2020-12119 being exploited?

CVE-2020-12119 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-12119 affect?

CVE-2020-12119 affects ledger live. Severity is high (CVSS 8.1). 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

This month

HIGH 8.1UPGRADE

CVE-2020-12119 is a high-severity flaw (CVSS 8.1) affecting ledger live. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-345
Published	2020-07-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ledger

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-07-02 15:15 UTCPublished CVE record published
2026-06-17 02:51 UTCUpdated Record last modified

ledger ledger live UPGRADE

Affected: < 2.7.0

Fixed in: 2.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ledger-live || rpm -q ledger-live || ledger-live --version

2. UPGRADE to 2.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ledger-live

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ledger-live

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-12119?

ledger live: upgrade to 2.7.0. Exact commands for each OS are on this page.

Is CVE-2020-12119 being exploited?

CVE-2020-12119 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-12119 affect?

CVE-2020-12119 affects ledger live. Severity is high (CVSS 8.1). 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

How urgent is CVE-2020-12119?

Priority 40/100. High severity

References

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