CVE-2025-66016
CRITICAL EPSS 5.9%
Published Nov 25, 20257mo ago · Modified Jun 17, 20262w ago
9.3 CVSS 4.0
Published Nov 25, 2025 7mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
5.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-345
References 2
- github.com https://github.com/LFDT-Lockness/cggmp21/security/advisories/GHSA-m95p-425x-x889
- dfns.co https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.