CVE Watch28 de out. de 2026

CVE-2026-117601

Electrum before 4.8.3 fails to verify signatures of wallet-owned inputs in unconfirmed mempool transactions, allowing malicious servers to r

CVSS

7.5

Alta

EPSS

0.2%

KEV

—

Exploit Today

0-100

Publicado: 27 de out. de 2026 · Última mod.: 28 de out. de 2026 · CWE-347

EPSS · 30d

0.2%EPSS · 30 dias0.2%

2026-10-282026-11-07

Descrição técnica

Electrum before 4.8.3 fails to verify signatures of wallet-owned inputs in unconfirmed mempool transactions, allowing malicious servers to replace a just-broadcast transaction with a conflicting one. Attackers can swallow the user's transaction and display an invalid zero-fee copy paying an attacker address, tricking users into RBF fee-bumping and signing it.

Referências oficiais

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