CVE-2025-8556
Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results
- State
- Published
- Severity
- 3.7 Low
- Published
- Aug 6, 2025
- Updated
- Oct 27, 2026
- Reserved
- Aug 4, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | redhat |
Weaknesses
- CWE-1287 Improper Validation of Specified Type of Input
Affected Products
| Product | Versions |
|---|---|
circl |
|
Builds for Red Hat OpenShiftRed Hat | |
Builds for Red Hat OpenShiftRed Hat | |
Builds for Red Hat OpenShiftRed Hat | |
Builds for Red Hat OpenShiftRed Hat | |
Builds for Red Hat OpenShiftRed Hat | |
Builds for Red Hat OpenShiftRed Hat | |
Custom Metric Autoscaler operator for Red Hat OpenshiftRed Hat | |
Custom Metric Autoscaler operator for Red Hat OpenshiftRed Hat | |
Custom Metric Autoscaler operator for Red Hat OpenshiftRed Hat | |
Custom Metric Autoscaler operator for Red Hat OpenshiftRed Hat | |
Custom Metric Autoscaler operator for Red Hat OpenshiftRed Hat | |
Multicluster Global HubRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift PipelinesRed Hat | |
OpenShift ServerlessRed Hat | |
OpenShift ServerlessRed Hat | |
OpenShift ServerlessRed Hat | |
OpenShift ServerlessRed Hat | |
OpenShift Service Mesh 3Red Hat | |
OpenShift Service Mesh 3Red Hat | |
OpenShift Service Mesh 3Red Hat | |
OpenShift Service Mesh 3Red Hat | |
OpenShift Service Mesh 3Red Hat | |
OpenShift Service Mesh 3Red Hat | |
OpenShift Service Mesh 3Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Management for Kubernetes 2Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Advanced Cluster Security 4Red Hat | |
Red Hat Ceph Storage 5Red Hat | |
Red Hat Ceph Storage 5Red Hat | |
Red Hat Ceph Storage 6Red Hat | |
Red Hat Ceph Storage 6Red Hat | |
Red Hat Ceph Storage 8Red Hat | |
Red Hat Ceph Storage 8Red Hat | |
Red Hat Developer Hub 1Red Hat | |
Red Hat Developer Hub 1Red Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Edge Manager previewRed Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat Enterprise Linux AI (RHEL AI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift AI (RHOAI)Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Dev Workspaces OperatorRed Hat | |
Red Hat OpenShift Dev Workspaces OperatorRed Hat | |
Red Hat OpenShift Dev Workspaces OperatorRed Hat | |
Red Hat OpenShift for Windows ContainersRed Hat | |
Red Hat OpenShift for Windows ContainersRed Hat | |
Red Hat OpenShift GitOpsRed Hat | |
Red Hat OpenShift GitOpsRed Hat | |
Red Hat OpenShift GitOpsRed Hat | |
Red Hat OpenShift GitOpsRed Hat | |
Red Hat OpenShift Virtualization 4Red Hat | |
Red Hat OpenStack Platform 16.2Red Hat | |
Red Hat OpenStack Platform 16.2Red Hat | |
Red Hat OpenStack Platform 16.2Red Hat | |
Red Hat OpenStack Platform 17.1Red Hat | |
Red Hat OpenStack Platform 17.1Red Hat | |
Red Hat OpenStack Platform 17.1Red Hat | |
Red Hat Trusted Application PipelineRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Artifact SignerRed Hat | |
Red Hat Trusted Profile AnalyzerRed Hat |
References
- https://access.redhat.com/security/cve/CVE-2025-8556vdb-entry
- RHBZ#2371624issue-tracking
- 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
- https://www.botanica.software/blog/cryptographic-issues-in-cloudflares-circl-fourq-implementation
- https://news.ycombinator.com/item?id=45669593
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.