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SM2-PKE has 32-bit Biased Nonce Vulnerability

🗓️ 09 Jan 2026 22:27:50Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 10 Views

SM2 PKE uses a 32-bit nonce due to a unit mismatch, lowering k entropy and enabling nonce recovery from public data and ciphertext.

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11 Jan 2026 14:56Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.17.5
CVSS 48.7
EPSS0.00051
SSVC
10