VULNERABILITY INTELLIGENCE

CVE-2026-3579

CVSS score5.9 MEDIUM

EPSS probability0.27%

CISA KEVNot currently listed

Published2026-03-19

Last modified2026-06-17

Description

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.