CVE-2021-3401

CRITICAL
9.8
CVSS Score
Published: February 4, 2021 at 04:47 AM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 1 vendorBitcoinBitcoin Core

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Severity
CRITICAL9.8
Exploit prediction
EPSS 10%

Description

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."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.19.0
Affected range stops below 0.19.0, so it looks safe — our inference, not a vendor statement
v < 0.19.0
Affected range stops below 0.19.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-88

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