Curve25519 Blinding_CVE-2025-7396

5.6 / 10

MEDIUM

CVSS:4.0/AV:P/AC:H/AT:P/PR:L/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

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.

Basic Information

ID CVE-2025-7396

Source wolfSSL

Published Jul 18, 2025 at 22:51

Modified Jul 21, 2025 at 15:05

Affected Product

Vendor wolfSSL

Product wolfSSL

Version 5.8.0; 0

Affected Versions wolfSSL wolfSSL 5.8.0; 0

CWE Classification

CWE-385

References

github.com /wolfSSL/wolfssl/blob/master/ChangeLog.md

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    "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.",
    "published": "2025-07-18T22:51:18.950Z",
    "modified": "2025-07-21T15:05:59.222Z",
    "type": "cve",
    "title": "Curve25519 Blinding",
    "source": "wolfSSL",
    "references": "https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#wolfssl-release-582-july-17-2025",
    "id": "CVE-2025-7396",
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