CVE-2025-66017CWE-327

CVE-2025-66017

published November 26, 2025

CVSS
8.2
EPSS
0%
Percentile
10.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
8.2 · NONE
CVSS v4.0
Not supplied
EPSS
0.00209 · 10.4th percentile
Weakness
CWE-327 · Use of a Broken or Risky Cryptographic Algorithm
Published
2025-11-26T01:16Z
References (2)
https://github.com/LFDT-Lockness/cggmp21/security/advisories/GHSA-8frv-q972-9rq5 · [email protected]https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained · [email protected]
EPSS history
Timeline
  • 25 NOV 19:59Z
    CGGMP21 presignatures can be used in the way that significantly reduces security
    cvelistv5