CVE-2021-3195

Name: CVE-2021-3195
Creator: NVD / NIST
Published: 2021-01-26T18:16:28.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.17%

Last modified Jun 17, 2026

CVE-2021-3195 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. bitcoind in Bitcoin Core through 0.21.0 can create a new file in an arbitrary directory (e.g., outside the ~/.bitcoin directory) via a dumpwallet RPC call. NOTE: this reportedly does not violate the security model of Bitcoin Core, but can violate the security model of a fork that has implemented dumpwallet restrictions. EPSS estimates a 1.17% chance of exploitation in the next 30 days.

Description

bitcoind in Bitcoin Core through 0.21.0 can create a new file in an arbitrary directory (e.g., outside the ~/.bitcoin directory) via a dumpwallet RPC call. NOTE: this reportedly does not violate the security model of Bitcoin Core, but can violate the security model of a fork that has implemented dumpwallet restrictions

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.17%

63.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Bitcoin	Bitcoin Core	<= 0.21.0

References

https://github.com/bitcoin/bitcoin/issues/20866Exploit, Issue Tracking, Third Party Advisory
https://github.com/bitcoin/bitcoin/issues/20866Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jan 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3195?

How severe is CVE-2021-3195?

CVE-2021-3195 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.17% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3195?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3195?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST