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CVE-2026-3580
Published: Mar 19, 2026
Modified: Mar 19, 2026
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
wolfSSL | wolfSSL | affected 0 - < 5.9.0 |
Weaknesses (CWE)
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