CVE-2026-3580 - Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V · CoreCVE

Back Back to CVE browser

LOW

Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V

Published Mar 19, 2026

2.1

LOW

CVSS 4.0

EPSS 0.12%

Description

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.

Affected products

Vendor wolfSSL Product wolfSSL Default
unaffected
- Version
  0
  Status
  affected
  Constraints
  <5.9.0

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

unaffected

Version	Status	Constraints
0	affected	<5.9.0

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-203

References (2)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-13172
Advisory
https://github.com/wolfSSL/wolfssl/pull/9855
Issue Tracking

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-13172		Advisory
https://github.com/wolfSSL/wolfssl/pull/9855		Issue Tracking

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner wolfSSL

Published Mar 19, 2026

Updated Mar 19, 2026

Reserved Mar 5, 2026

Link CVE-2026-3580

CISA Vulnrichment

Updated Mar 19, 2026

Status Analyzed

Modified Jun 17, 2026

Link CVE-2026-3580

Severity n/a

Public date n/a

Links CVE-2026-3580

Assigner wolfSSL

Published Mar 19, 2026

Updated Mar 19, 2026

Exploited since n/a

Link EUVD-2026-13172

EUVD-2026-13172