Threats Tagged 'cve-2026-77696'
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Threats Tagged 'cve-2026-77696'
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CVE-2026-77696 describes a timing side-channel vulnerability in SM2 signature generation. The signature process uses non-constant-time arithmetic on secret values, causing the time taken to generate signatures to depend on secret data. An attacker who can measure signing times may gain information about the secret nonce used per signature. Over many signatures, this can enable recovery of the private key through lattice or Hidden Number Problem attacks. This affects all platforms performing SM2 signature generation. The vulnerability has a low CVSS score of 3.7 and does not impact FIPS compliance as SM2 is not a FIPS algorithm. Join the discussion | GCVE Database | 09/29/2026, 18:31:44 UTC Added: 09/29/2026, 21:04:05 UTC |
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