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Critical · 9.3 CVE-2025-66016 EUVD-2025-199643GHSA-m95p-425x-x889RUSTSEC-2025-0129RUSTSEC-2025-0130

CGGMP24 is missing a check in the ZK proof used in CGGMP21

Published Nov 25, 2025 · Updated Nov 25, 2025 · Assigned by GitHub_M

Description

CGGMP24 is a state-of-art ECDSA TSS protocol that supports 1-round signing (requires 3 preprocessing rounds), identifiable abort, and a key refresh protocol. Prior to version 0.6.3, there is a missing check in the ZK proof that enables an attack in which single malicious signer can reconstruct full private key. This issue has been patched in version 0.6.3, for full mitigation it is recommended to upgrade to cggmp24 version 0.7.0-alpha.2 as it contains more security checks.

Affected products

VendorProductAffectedFixed
LFDT-Lockness cggmp21 < 0.6.3 —

Affected packages

EcosystemPackageAffectedFixedRecord
crates.io cggmp21 < 0.6.3 0.6.3 GHSA-m95p-425x-x889
crates.io cggmp21 >= 0.0.0-0, < 0.6.3 0.6.3 RUSTSEC-2025-0129
crates.io cggmp24 < 0.7.0-alpha.2 0.7.0-alpha.2 GHSA-m95p-425x-x889
crates.io cggmp24 >= 0.0.0-0, < 0.7.0-alpha.2 0.7.0-alpha.2 RUSTSEC-2025-0130

References