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CVE-2025-66016

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Date: November 25, 2025

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.

Severity Score

Related Resources (10)

https://crates.io/crates/cggmp21
https://rustsec.org/advisories/RUSTSEC-2025-0129.html
https://crates.io/crates/cggmp24
https://github.com/LFDT-Lockness/cggmp21/commit/60e0ada5291e771d5649793329d99edd32285e72
https://rustsec.org/advisories/RUSTSEC-2025-0130.html
https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained
https://nvd.nist.gov/vuln/detail/CVE-2025-66016
https://github.com/LFDT-Lockness/cggmp21/security/advisories/GHSA-m95p-425x-x889
https://github.com/LFDT-Lockness/cggmp21
https://www.mend.io/vulnerability-database/CVE-2025-66016

Severity Score

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

Insufficient Verification of Data Authenticity

CWE-345

Top Fix

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Upgrade Version

Upgrade to version cggmp21 - 0.7.0-alpha.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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