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CVE-2025-8556

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

CVSS score

3.7

EPSS probability

%0.5

Risk score

0.0

Published

1 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

DayBreach CVE AI Research

CVE-2025-8556 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2025-8556 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1redhatcircl View
2Red HatBuilds for Red Hat OpenShift View
3Red HatCustom Metric Autoscaler operator for Red Hat Openshift View
4Red HatMulticluster Global Hub View
5Red HatOpenShift Pipelines View
6Red HatOpenShift Serverless View
7Red HatOpenShift Service Mesh 3 View
8Red HatRed Hat Advanced Cluster Management for Kubernetes 2 View
9Red HatRed Hat Advanced Cluster Security 4 View
10Red HatRed Hat Ceph Storage 5 View
11Red HatRed Hat Ceph Storage 6 View
12Red HatRed Hat Ceph Storage 8 View
13Red HatRed Hat Developer Hub 1 View
14Red HatRed Hat Edge Manager preview View
15Red HatRed Hat Enterprise Linux 10 View
16Red HatRed Hat Enterprise Linux 9 View
17Red HatRed Hat Enterprise Linux AI (RHEL AI) View
18Red HatRed Hat OpenShift AI (RHOAI) View
19Red HatRed Hat OpenShift Container Platform 4 View
20Red HatRed Hat OpenShift Dev Workspaces Operator View
21Red HatRed Hat OpenShift for Windows Containers View
22Red HatRed Hat OpenShift GitOps View
23Red HatRed Hat OpenShift Virtualization 4 View
24Red HatRed Hat OpenStack Platform 16.2 View
25Red HatRed Hat OpenStack Platform 17.1 View
26Red HatRed Hat Trusted Application Pipeline View
27Red HatRed Hat Trusted Artifact Signer View
28Red HatRed Hat Trusted Profile Analyzer View
Total affected vendors: 2|Products: 28

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
3.7CVSS V31LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NNVD
3.7CVSS V3_1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NCVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-8556 is associated with the following CWEs:

CWE-1287: Common Weakness Enumeration Entry CWE-1287

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-8556 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://access.redhat.com/security/cve/CVE-2025-8556vendor-advisoryRHBZ#2371624vendor-advisoryhttps://github.com/cloudflare/circlvendor-advisoryhttps://github.com/cloudflare/circl/security/advisories/GHSA-2x5j-vhc8-9cwmvendor-advisoryhttps://github.com/cloudflare/circl/tree/v1.6.1vendor-advisoryhttps://news.ycombinator.com/item?id=45669593nvdhttps://www.botanica.software/blog/cryptographic-issues-in-cloudflares-circl-fourq-implementationnvd

CVSS Vector Radar Chart

3.7 / 10
Attack VectorNetworkComplexityHighPrivilegesNoneUser Interact.NoneConfidentialityHighIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)High
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Weakness Type (CWE & CAPEC)

CWE-1287

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CVE-2025-8556 · Github.com/cloudflare/circl: circl-fourq:…