Low severity · published Aug 6, 2025
CVE-2025-8556
Github.com/cloudflare/circl: circl-fourq: missing and wrong validation can lead to incorrect results
3.7
CVSS
0.5%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BF
Builds for Red Hat OpenShift · Red Hat
All versions, or not specified · source: vendor
CM
Custom Metric Autoscaler operator for Red Hat Openshift · Red Hat
All versions, or not specified · source: vendor
MG
Multicluster Global Hub · Red Hat
All versions, or not specified · source: vendor
OP
OpenShift Pipelines · Red Hat
All versions, or not specified · source: vendor
OS
OpenShift Serverless · Red Hat
All versions, or not specified · source: vendor
OS
OpenShift Service Mesh 3 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Advanced Cluster Management for Kubernetes 2 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Advanced Cluster Security 4 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ceph Storage 5 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ceph Storage 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ceph Storage 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Developer Hub 1 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-8556
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-8556
access.redhat.com
https://access.redhat.com/security/cve/CVE-2025-8556
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2371624
github.com
https://github.com/cloudflare/circl
github.com
https://github.com/cloudflare/circl/security/advisories/GHSA-2x5j-vhc8-9cwm
github.com
https://github.com/cloudflare/circl/tree/v1.6.1
news.ycombinator.com
https://news.ycombinator.com/item?id=45669593
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