CVE-2026-3580 (GCVE-0-2026-3580)
Vulnerability from cvelistv5 – Published: 2026-03-19 19:46 – Updated: 2026-03-19 20:25
VLAI
EPSS
VEX
Title
Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-19 20:25 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
wolfSSL
CNA
References
1 reference
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