CVE-2025-66017: RUSTSEC-2025-0127 - CGGMP21 presignatures can be used in the way that significantly reduces security

CVE-2025-66017 · Severity: medium · CVSS 4 · Published 2025-11-25

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.

Technologies: cggmp21 (crates.io). Vendors: crates.io.

Quick answers

Is CVE-2025-66017 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-66017 being exploited in the wild.
How severe is CVE-2025-66017?
Medium severity, with a CVSS score of 4, published 25 November 2025.
Which products and versions are affected?
cggmp21 (crates.io) SEMVER:introduced=0,last_affected=0.6.3, SEMVER:introduced=0.0.0-0; cggmp24 (crates.io) SEMVER:introduced=0,fixed=0.7.0-alpha.2, SEMVER:introduced=0.0.0-0,fixed=0.7.0-alpha.2.
Is there a fix for CVE-2025-66017?
Yes. cggmp24 (crates.io): upgrade to 0.7.0-alpha.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-66017?
Check whether you run cggmp21 (crates.io) or cggmp24 (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • cggmp24 (crates.io): upgrade to 0.7.0-alpha.2 or later
    cargo update -p cggmp24

Affected products

  • cggmp21 (crates.io) SEMVER:introduced=0,last_affected=0.6.3, SEMVER:introduced=0.0.0-0
  • cggmp24 (crates.io) SEMVER:introduced=0,fixed=0.7.0-alpha.2, SEMVER:introduced=0.0.0-0,fixed=0.7.0-alpha.2

Identifiers

  • CVE-2025-66017
  • GHSA-8frv-q972-9rq5
  • RUSTSEC-2025-0127
  • RUSTSEC-2025-0128

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