{"id":"CVE-2025-66017","revision":"768b68b76c304ad29bcbc11c5a54768c","records":[{"revision":"768b68b76c304ad29bcbc11c5a54768c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-66017","aliases":[],"title":"CGGMP21 presignatures can be used in the way that significantly reduces security","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. In versions 0.6.3 and prior of cggmp21 and version 0.7.0-alpha.1 of cggmp24, presignatures can be used in the way that significantly reduces security. cggmp24 version 0.7.0-alpha.2 release contains API changes that make it impossible to use presignatures in contexts in which it reduces security.","state":0,"publishedAt":"2025-11-25T19:59:07.956+00:00","modifiedAt":"2025-11-25T20:48:35.8+00:00","affected":[{"ecosystem":"Vendor product","name":"cggmp21","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"LFDT-Lockness\",\n                    \"product\": \"cggmp21\",\n                    \"versions\": [\n                        {\n                            \"version\": \"cggmp21 <= 0.6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"cggmp24 = 0.7.0-alpha.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/LFDT-Lockness/cggmp21/security/advisories/GHSA-8frv-q972-9rq5","https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-66017","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-66017","identifiers":["CVE-2025-66017"]},"retained":false,"historicalAffected":[]}],"coverage":[]}