CVE-2026-3579 (GCVE-0-2026-3579)

Vulnerability from cvelistv5 – Published: 2026-03-19 19:37 – Updated: 2026-03-24 01:36
VLAI
Title
Non-constant time multiplication subroutine __muldi3 on RISC-V RV32I
Summary
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.
Severity
2.1 (Low)
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-24 01:36 UTC
CWE
Assigner
wolfSSL CNA under the icscert root
CNA scorecard B 80/100 over 51 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
wolfSSL wolfSSL Affected: 0 , < 5.9.0 (semver)
guessed Create a notification for this product.
Credits
Wind Wong
Show details on NVD website
To clipboard 

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