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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.

PUBLISHED Reserved 2025-11-21 | Published 2025-11-25 | Updated 2025-11-25 | Assigner GitHub_M




HIGH: 8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-327: Use of a Broken or Risky Cryptographic Algorithm

Product status

cggmp21 <= 0.6.3
affected

cggmp24 = 0.7.0-alpha.1
affected

References

github.com/...ggmp21/security/advisories/GHSA-8frv-q972-9rq5

www.dfns.co/...cggmp21-vulnerabilities-patched-and-explained

cve.org (CVE-2025-66017)

nvd.nist.gov (CVE-2025-66017)

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