CVE-2025-7396 - CVE House
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Status published Medium CVE-2025-7396

Curve25519 Blinding

Vulnerability Description

In wolfSSL release 5.8.2 blinding support is turned on by default for Curve25519 in applicable builds. The blinding configure option is only for the base C implementation of Curve25519. It is not needed, or available with; ARM assembly builds, Intel assembly builds, and the small Curve25519 feature. While the side-channel attack on extracting a private key would be very difficult to execute in practice, enabling blinding provides an additional layer of protection for devices that may be more susceptible to physical access or side-channel observation.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Arnaud Varillon
  • Laurent Sauvage
  • Allan Delautre

References

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Affected Vendor

Affected Software

wolfSSL
Vulnerable Versions:
5.8.0; 0

Timeline

Official Publish: July 18th, 2025
Last Modified: July 21st, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.