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OpenSSL OpenSSLTiming Side-Channel in SM2 Signature Generation

Risk 21
Severity
3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel.

1 / 5
Source: Launchpad
First published (updated )
CVE-2026-77696

OpenSSL OpenSSLTiming Side-Channel in Scalar Multiplication for Non-NIST EC Curves

Risk 21
Severity
3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Issue summary: The generic elliptic-curve scalar multiplication used for ECDSA and SM2 signature operations with curves that do not have a dedicated implementation leaks information about the secret nonce through timing.

1 / 5
Source: Launchpad
First published (updated )
CVE-2026-54872

OpenSSL OpenSSL FIPS ModuleFFC-DH Peer Validation Uses Attacker-Supplied q

Risk 21
Severity
3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

FFC-DH Peer Validation Uses Attacker-Supplied q

1 / 7
Source: Microsoft
First published (updated )
CVE-2026-42770

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