CVE-2025-8556 Information

Aug 07, 2025 cve

Description

A flaw was found in CIRCL’s implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

https://access.redhat.com/security/cve/CVE-2025-8556 https://bugzilla.redhat.com/show_bug.cgi?id=2371624 https://github.com/cloudflare/circl https://github.com/cloudflare/circl/security/advisories/GHSA-2x5j-vhc8-9cwm https://github.com/cloudflare/circl/tree/v1.6.1

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.7

CNNVD-202508-560 (Published: 2025-08-06)

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