CVE-2025-8556

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

Published Aug 6, 2025 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-23815 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.
Github GHSA Github GHSA GHSA-2x5j-vhc8-9cwm CIRCL-Fourq: Missing and wrong validation can lead to incorrect results
History
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:9
cpe:/a:redhat:enterprise_linux:10
cpe:/a:redhat:enterprise_linux:9
Type Values Removed Values Added
Weaknesses CWE-347
Type Values Removed Values Added
Weaknesses CWE-1287
Type Values Removed Values Added
First Time appeared Redhat edge Manager
CPEs cpe:/a:redhat:edge_manager:0
Vendors & Products Redhat edge Manager
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results
First Time appeared Redhat
Redhat acm
Redhat advanced Cluster Security
Redhat ceph Storage
Redhat container Native Virtualization
Redhat devworkspace
Redhat enterprise Linux
Redhat enterprise Linux Ai
Redhat multicluster Globalhub
Redhat openshift
Redhat openshift Ai
Redhat openshift Builds
Redhat openshift Custom Metrics Autoscaler
Redhat openshift Gitops
Redhat openshift Pipelines
Redhat openstack
Redhat rhdh
Redhat serverless
Redhat service Mesh
Redhat trusted Application Pipeline
Redhat trusted Artifact Signer
Redhat trusted Profile Analyzer
Redhat windows Machine Config
Weaknesses CWE-347
CPEs cpe:/a:redhat:acm:2
cpe:/a:redhat:advanced_cluster_security:4
cpe:/a:redhat:ceph_storage:5
cpe:/a:redhat:ceph_storage:6
cpe:/a:redhat:ceph_storage:8
cpe:/a:redhat:container_native_virtualization:4
cpe:/a:redhat:devworkspace
cpe:/a:redhat:enterprise_linux_ai:1
cpe:/a:redhat:multicluster_globalhub
cpe:/a:redhat:openshift:4
cpe:/a:redhat:openshift_ai
cpe:/a:redhat:openshift_builds:1
cpe:/a:redhat:openshift_custom_metrics_autoscaler:2
cpe:/a:redhat:openshift_gitops:1
cpe:/a:redhat:openshift_pipelines:1
cpe:/a:redhat:openstack:16.2
cpe:/a:redhat:openstack:17.1
cpe:/a:redhat:rhdh:1
cpe:/a:redhat:serverless:1
cpe:/a:redhat:service_mesh:3
cpe:/a:redhat:trusted_application_pipeline:1
cpe:/a:redhat:trusted_artifact_signer:1
cpe:/a:redhat:trusted_profile_analyzer:1
cpe:/a:redhat:windows_machine_config
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat acm
Redhat advanced Cluster Security
Redhat ceph Storage
Redhat container Native Virtualization
Redhat devworkspace
Redhat enterprise Linux
Redhat enterprise Linux Ai
Redhat multicluster Globalhub
Redhat openshift
Redhat openshift Ai
Redhat openshift Builds
Redhat openshift Custom Metrics Autoscaler
Redhat openshift Gitops
Redhat openshift Pipelines
Redhat openstack
Redhat rhdh
Redhat serverless
Redhat service Mesh
Redhat trusted Application Pipeline
Redhat trusted Artifact Signer
Redhat trusted Profile Analyzer
Redhat windows Machine Config
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}