CVE-2025-66016 json
CGGMP24 is missing a check in the ZK proof used in CGGMP21
published 2025-11-24 11 mo ago modified 2026-10-18 21 d ago also GHSA-m95p-425x-x889 , RUSTSEC-2025-0129 , RUSTSEC-2025-0130 , EUVD-2025-199643
- cvss
- 9.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- crates.io cggmp21 0.6.3
- crates.io cggmp24 0.7.0-alpha.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 11 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | cggmp21 | <0.6.3 >=0.0.0-0, <0.6.3 |
0.6.3 |
| crates.io | cggmp24 | <0.7.0-alpha.2 >=0.0.0-0, <0.7.0-alpha.2 |
0.7.0-alpha.2 |
Affected products
- LFDT-Lockness cggmp21
Classification
References
-
github.com
/LFDT-Lockness/cggmp21/commit/60e0ada5291e771d5649793329d99edd32285e72
web
-
github.com
/LFDT-Lockness/cggmp21/security/advisories/GHSA-m95p-425x-x889
web
-
dfns.co
/article/cggmp21-vulnerabilities-patched-and-explained
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-66016
advisory
-
github.com
/LFDT-Lockness/cggmp21
package
-
rustsec.org
/advisories/RUSTSEC-2025-0129.html
web, advisory
-
rustsec.org
/advisories/RUSTSEC-2025-0130.html
web, advisory
-
crates.io
/crates/cggmp21
package
-
crates.io
/crates/cggmp24
package
Sources
- CVE List CVE-2025-66016
- GitHub Advisory GHSA-m95p-425x-x889
- NVD CVE-2025-66016
- OSV RUSTSEC-2025-0129
- OSV RUSTSEC-2025-0130
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