CVE-2025-65951

Inside Track / Entropy Derby Timelock Encryption Bypassed via Pre-Computed VDF Output Leakage

CVSS 8.7 HIGHEPSS 0.1%CWE-200 CWE-327

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 8.7EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

25 nov 2025Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Inside Track / Entropy Derby is a research-grade horse-racing betting engine. Prior to commit 2d38d2f, the VDF-based timelock encryption system fails to enforce sequential delay against the betting operator. Bettors pre-compute the entire Wesolowski VDF and include vdfOutputHex in their encrypted bet ticket, allowing the house to decrypt immediately using fast proof verification instead of expensive VDF evaluation. This issue has been patched via commit 2d38d2f.

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

Produtos afetados

mescuwa · entropy-derby

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Referências

https://github.com/mescuwa/entropy-derby/commit/2d38d2f16bbb3b4240698148f80d8c5202725c77 https://github.com/mescuwa/entropy-derby/security/advisories/GHSA-pm54-f847-w4mh