CVE-2020-12118

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-04-23 · updated 2026-06-17
Weakness: CWE-276

Description

The keygen protocol implementation in Binance tss-lib before 1.2.0 allows attackers to generate crafted h1 and h2 parameters in order to compromise a signing round or obtain sensitive information from other parties.

Affected products

Binance Tss-Lib: before 1.2.0 — fixed in 1.2.0

How to fix

Upgrade to a fixed version: Binance Tss-Lib 1.2.0. Check the vendor advisory for mitigations.

References

https://github.com/binance-chain/tss-lib/pull/89
https://github.com/binance-chain/tss-lib/releases/tag/v1.2.0
https://github.com/binance-chain/tss-lib/pull/89
https://github.com/binance-chain/tss-lib/releases/tag/v1.2.0

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