CVE-2026-3579

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/wolfSSL/wolfssl/pull/9855	Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:wolfssl:wolfssl:5.8.4:*:*:*:*:*:*:*

History

23 Mar 2026, 18:56

Type	Values Removed	Values Added
CPE		cpe:2.3:a:wolfssl:wolfssl:5.8.4:::::::*
Summary		(es) wolfSSL 5.8.4 en arquitecturas RISC-V RV32I carece de una implementación de software de tiempo constante para la multiplicación de 64 bits. La subrutina __muldi3, insertada por el compilador, se ejecuta en tiempo variable según los valores de los operandos. Esto afecta a múltiples funciones matemáticas SP (sp_256_mul_9, sp_256_sqr_9, etc.), lo que lleva a un canal lateral de temporización que puede exponer datos criptográficos sensibles.
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.9
References	~~() https://github.com/wolfSSL/wolfssl/pull/9855 -~~	() https://github.com/wolfSSL/wolfssl/pull/9855 - Issue Tracking
First Time		Wolfssl Wolfssl wolfssl

19 Mar 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-19 20:16

Updated : 2026-03-23 18:56

NVD link : CVE-2026-3579

Mitre link : CVE-2026-3579

CVE.ORG link : CVE-2026-3579

JSON object : View

Products Affected

wolfssl

wolfssl

CWE

CWE-203

Observable Discrepancy

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