CVE-2026-3580
MEDIUM
wolfssl
NVD
CVSS Score
4.7
Severity
MEDIUM
Published
Mar 19, 2026
Vendor
wolfssl
Description
In wolfSSL 5.8.4, constant-time masking logic in sp_256_get_entry_256_9 is optimized into conditional branches (bnez) by GCC when targeting RISC-V RV32I with -O3. This transformation breaks the side-channel resistance of ECC scalar multiplication, potentially allowing a local attacker to recover secret keys via timing analysis.