CVE-2025-8556 LOW

CVE-2025-8556: Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results

Vendor Red Hat
Product Builds for Red Hat OpenShift
Weakness CWE-1287
Published August 6, 2025
Last update February 25, 2026
View on NVD All CVEs

CVSS base score

3.7/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 6, 2025 CVE published
February 25, 2026 Record updated