CVE-2026-3579
Non-constant time multiplication subroutine __muldi3 on RISC-V RV32I
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
3th
wolfSSL 5.8.4 on RISC-V RV32I architectures lacks a constant-time software implementation for 64-bit multiplication. The compiler-inserted __muldi3 subroutine executes in variable time based on operand values. This affects multiple SP math functions (sp_256_mul_9, sp_256_sqr_9, etc.), leading to a timing side-channel that may expose sensitive cryptographic data.
| CWE | CWE-203 |
| Vendor | wolfssl |
| Product | wolfssl |
| Published | Mar 19, 2026 |
| Last Updated | Mar 24, 2026 |
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Affected Versions
wolfSSL / wolfSSL
0 < 5.9.0
Credits
Wind Wong