How severe is CVE-2018-1000851?

CVE-2018-1000851 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1000851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000851?

CVE-2018-1000851 affects Copay Copay Bitcoin Wallet. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000851?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-1000851 published?

CVE-2018-1000851 was published on 2018-12-20 and last updated on 2026-06-17.

CVE-2018-1000851

CVE-2018-1000851 is a critical-severity vulnerability in Copay Copay Bitcoin Wallet with a CVSS 3.x base score of 9.8. 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-522.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Copay Copay Bitcoin Wallet
Published: 2018-12-20
Last modified: 2026-06-17

Description

Copay Bitcoin Wallet version 5.01 to 5.1.0 included. contains a Other/Unknown vulnerability in wallet private key storage that can result in Users' private key can be compromised. . This attack appear to be exploitable via Affected version run the malicious code at startup . This vulnerability appears to have been fixed in 5.2.0 and later .

Frequently asked questions

What is CVE-2018-1000851?: Copay Bitcoin Wallet version 5.01 to 5.1.0 included. contains a Other/Unknown vulnerability in wallet private key storage that can result in Users' private key can be compromised. . This attack appear to be exploitable via Affected version run the malicious code at startup . This vulnerability appears to have been fixed in 5.2.0 and later .
How severe is CVE-2018-1000851?: CVE-2018-1000851 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1000851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000851?: CVE-2018-1000851 affects Copay Copay Bitcoin Wallet. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000851?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-1000851 published?: CVE-2018-1000851 was published on 2018-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:copay:copay_bitcoin_wallet:*:*:*:*:*:*:*:*

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