How severe is CVE-2020-6861?

CVE-2020-6861 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-6861 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6861?

CVE-2020-6861 affects Ledger Monero. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-6861?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-6861 published?

CVE-2020-6861 was published on 2020-05-06 and last updated on 2026-06-17.

CVE-2020-6861

CVE-2020-6861 is a medium-severity vulnerability in Ledger Monero with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-327.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Ledger Monero
Published: 2020-05-06
Last modified: 2026-06-17

Description

A flawed protocol design in the Ledger Monero app before 1.5.1 for Ledger Nano and Ledger S devices allows a local attacker to extract the master spending key by sending crafted messages to this app selected on a PIN-entered Ledger connected to a host PC.

Frequently asked questions

What is CVE-2020-6861?: A flawed protocol design in the Ledger Monero app before 1.5.1 for Ledger Nano and Ledger S devices allows a local attacker to extract the master spending key by sending crafted messages to this app selected on a PIN-entered Ledger connected to a host PC.
How severe is CVE-2020-6861?: CVE-2020-6861 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-6861 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6861?: CVE-2020-6861 affects Ledger Monero. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-6861?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-6861 published?: CVE-2020-6861 was published on 2020-05-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ledger:monero:*:*:*:*:*:*:*:*

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