CVE-2025-66016
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-25

Last updated on: 2025-11-25

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2025-11-25
Last Modified
2025-11-25
Generated
2026-06-16
AI Q&A
2025-11-25
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66016
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
cggmp24 cggmp24 0.7.0-alpha.2
cggmp24 cggmp24 0.6.3
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-345 The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
Attack-Flow Graph
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Executive Summary

This vulnerability exists in CGGMP24 versions prior to 0.6.3, where a missing check in the zero-knowledge (ZK) proof allows a single malicious signer to reconstruct the full private key. CGGMP24 is an ECDSA threshold signature scheme (TSS) protocol, and this flaw compromises the security of the private key used in signing operations. The issue has been patched in version 0.6.3, with further security improvements in version 0.7.0-alpha.2.

Impact Analysis

If exploited, this vulnerability allows a single malicious participant in the CGGMP24 protocol to reconstruct the entire private key, potentially enabling unauthorized signing of transactions or messages. This compromises the confidentiality and integrity of cryptographic operations relying on the private key, leading to severe security breaches.

Mitigation Strategies

To mitigate this vulnerability, upgrade CGGMP24 to version 0.6.3 or later. For full mitigation, it is recommended to upgrade to version 0.7.0-alpha.2 as it contains additional security checks.

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