CVE-2021-3401

9.8 criticalEPSS 11%

Critical (9.8) in bitcoin bitcoin. EPSS 11% chance of exploitation in the next 30 days.

Bitcoin Core before 0.19.0 might allow remote attackers to execute arbitrary code when another application unsafely passes the -platformpluginpath argument to the bitcoin-qt program, as demonstrated by an x-scheme-handler/bitcoin handler for a .desktop file or a web browser. NOTE: the discoverer states "I believe that this vulnerability cannot actually be exploited."

Severity

CVSS 3.1

9.8 critical

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

EPSS: 11% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)
CWE: CWE-88
Published: 2021-02-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

bitcoin:bitcoin

References

https://achow101.com/2021/02/0.18-uri-vuln
https://github.com/bitcoin/bitcoin/pull/16578
https://achow101.com/2021/02/0.18-uri-vuln
https://github.com/bitcoin/bitcoin/pull/16578

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