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Fencer Vulns
medium 5.3

CVE-2025-47914 json

Malformed constraint may cause denial of service in golang.org/x/crypto/ssh/agent

published 2025-11-19 11 mo ago modified 2026-10-18 21 d ago also GHSA-f6x5-jh6r-wrfv , GO-2025-4135 , EUVD-2025-198227

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

SSH Agent servers do not validate the size of messages when processing new identity requests, which may cause the program to panic if the message is malformed due to an out of bounds read.

Patch / fix

  • go golang.org/x/crypto 0.45.0
  • golang.org/x/crypto golang.org/x/crypto/ssh/agent 0.45.0
  • golang-go.crypto Debian 14 1:0.45.0-1

debian advisories DEBIAN-CVE-2025-47914

  • golang1.25 hummingbird 1 1.25.9-1.hum1
  • golang1.25-bin hummingbird 1 1.25.9-1.hum1
  • golang1.25-src hummingbird 1 1.25.9-1.hum1
  • golang1.25-misc hummingbird 1 1.25.9-1.hum1
  • golang1.25-tests hummingbird 1 1.25.9-1.hum1
  • golang1.25-shared hummingbird 1 1.25.9-1.hum1
  • golang1.26 hummingbird 1 1.26.2-1.hum1
  • golang1.26-bin hummingbird 1 1.26.2-1.hum1

red hat advisories RHSA-2026:7385RHSA-2026:7291

  • amazon-ssm-agent SLE Module for Public Cloud 12 3.3.5678.0-4.55.1
  • podman Linux Micro 6.1 5.4.2-slfo.1.1_6.1
  • kubevirt-1.6 SLE Module for Containers 15 SP7 1.6.6-150700.15.17.1
  • terraform-provider-aws SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.11.0-150200.6.18.1
  • terraform-provider-tls SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.5.15.1
  • terraform-provider-helm SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.9.0-150200.6.23.1
  • terraform-provider-null SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.6.18.1
  • terraform-provider-local SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.0.0-150200.6.17.1

suse advisories SUSE-SU-2026:5067-1SUSE-SU-2026:24378-1SUSE-SU-2026:3630-1SUSE-SU-2026:3056-1SUSE-SU-2026:22516-1SUSE-SU-2026:2733-1

  • amazon-ssm-agent openSUSE Tumbleweed 3.3.5678.0-1.1
  • k3sup openSUSE Tumbleweed 0.13.14-1.1
  • kumactl openSUSE Tumbleweed 3.0.0-1.1
  • rz-pm openSUSE Tumbleweed 0.3.6-1.1
  • containerized-data-importer1.65 openSUSE Leap 16.0 1.65.0-160000.3.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • podman openSUSE Leap 16.0 5.4.2-160000.5.1
  • docker-compose openSUSE Leap 16.0 2.33.1-160000.4.1

opensuse advisories openSUSE-SU-2026:12314-1openSUSE-SU-2026:12295-1openSUSE-SU-2026:12300-1openSUSE-SU-2026:11781-1openSUSE-SU-2026:21824-1openSUSE-SU-2026:21483-1

  • etcd Alpine 3.24, Alpine 3.23 3.6.8-r0

alpine advisories ALPINE-CVE-2025-47914

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-47914 updated cvss 5.3

golang.org/x/crypto/ssh/agent: SSH Agent servers: Denial of Service due to malformed messages

  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 rhai/assisted-installer-rhel9, rhai/assisted-installer-controller-rhel9 Red Hat Builds for Red Hat OpenShift openshift-builds/openshift-builds-waiters-rhel9, openshift-builds/openshift-builds-webhook-rhel9, openshift-builds/openshift-builds-controller-rhel9, openshift-builds/openshift-builds-git-cloner-rhel9, openshift-builds/openshift-builds-image-bundler-rhel9, openshift-builds/openshift-builds-image-processing-rhel9 Red Hat Cryostat 4 cryostat/cryostat-storage-rhel9, cryostat/cryostat-grafana-dashboard-rhel9 Red Hat External Secrets Operator for Red Hat OpenShift external-secrets-operator/external-secrets-rhel9 Red Hat ExternalDNS Operator edo/external-dns-rhel8, edo/external-dns-rhel9 Red Hat Multicluster Engine for Kubernetes multicluster-engine/hive-rhel8, multicluster-engine/hive-rhel9, multicluster-engine/must-gather-rhel8, multicluster-engine/must-gather-rhel9, multicluster-engine/hypershift-cli-rhel8, multicluster-engine/hypershift-cli-rhel9, +17 more
    +33 more products
    Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-grafana-rhel9 Red Hat OpenShift API for Data Protection oadp/oadp-velero-rhel8, oadp/oadp-mustgather-rhel8, oadp/oadp-mustgather-rhel9, oadp/oadp-velero-restic-restore-helper-rhel9 Red Hat OpenShift Developer Tools and Services openshift4/ose-jenkins, ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9, ocp-tools-4/jenkins-agent-base-rhel8, ocp-tools-4/jenkins-agent-base-rhel9 Red Hat OpenShift Pipelines openshift-pipelines-client Red Hat OpenShift Serverless openshift-serverless-clients, openshift-serverless-1/kn-plugin-func-func-util-rhel9 Red Hat OpenShift Service Mesh 2 openshift-service-mesh/istio-rhel8-operator Red Hat Advanced Cluster Management for Kubernetes 2 flightctl, flightctl-agent, flightctl-selinux, rhacm2/volsync-rhel9, rhacm2/acm-grafana-rhel9, rhacm2/acm-must-gather-rhel9, +7 more Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel8, advanced-cluster-security/rhacs-roxctl-rhel8, advanced-cluster-security/rhacs-scanner-rhel8, advanced-cluster-security/rhacs-rhel8-operator, advanced-cluster-security/rhacs-central-db-rhel8, advanced-cluster-security/rhacs-scanner-db-rhel8, +4 more Red Hat Ansible Automation Platform 2 flightctl Red Hat Ceph Storage 5 rhel8/grafana, rhel9/grafana, rhceph/grafana-rhel9 Red Hat Ceph Storage 6 grafana, rhel8/grafana, rhel9/grafana, rhceph/grafana-rhel9 Red Hat Ceph Storage 7 grafana Red Hat Ceph Storage 8 grafana, rhel8/grafana, rhel9/grafana Red Hat Ceph Storage 9 grafana Red Hat Edge Manager preview flightctl, rhem/flightctl-api-rhel9, rhem/flightctl-worker-rhel9, rhem/flightctl-db-setup-rhel9, rhem/flightctl-periodic-rhel9, rhacm2/acm-flightctl-api-rhel9, +7 more Red Hat Enterprise Linux 8 rhc, conmon, podman, skopeo, buildah, toolbox, +11 more Red Hat Enterprise Linux 9 rhc, conmon, podman, buildah, toolbox, podman-tests, +9 more Red Hat Enterprise Linux 10 podman, buildah, gvisor-tap-vsock Red Hat OpenShift AI (RHOAI) rhoai/odh-model-registry-rhel9, rhoai/odh-data-science-pipelines-argo-argoexec-rhel9, rhoai/odh-data-science-pipelines-argo-workflowcontroller-rhel9 Red Hat OpenShift Container Platform 4 cri-o, conmon, podman, openshift, microshift, podman-tests, +138 more Red Hat OpenShift Dev Spaces devspaces/traefik-rhel9, devspaces/configbump-rhel9 Red Hat OpenShift Dev Workspaces Operator devworkspace/devworkspace-rhel9-operator, devworkspace/devworkspace-project-clone-rhel9 Red Hat OpenShift for Windows Containers openshift4-wincw/windows-machine-config-rhel9-operator, openshift4-wincw/windows-machine-config-operator-bundle Red Hat OpenShift GitOps openshift-gitops-1/argocd-rhel8, openshift-gitops-1/argocd-rhel9, openshift-gitops-1/gitops-rhel8, openshift-gitops-1/argocd-agent-rhel8, openshift-gitops-1/gitops-rhel8-operator, openshift-gitops-1/gitops-operator-bundle Red Hat OpenShift on AWS rosa Red Hat OpenShift Virtualization 4 kubevirt, container-native-virtualization/virt-api, container-native-virtualization/virt-handler, container-native-virtualization/virt-launcher, container-native-virtualization/virt-operator, container-native-virtualization/ovs-cni-marker, +23 more Red Hat OpenStack Platform 16.2 etcd, rhosp-rhel8/osp-director-agent, rhosp-rhel9/osp-director-agent, rhosp-rhel8/osp-director-operator, rhosp-rhel9/osp-director-operator, rhosp-rhel9/osp-director-downloader, +2 more Red Hat OpenStack Platform 17.1 rhosp-rhel9/osp-director-agent, rhosp-rhel9/osp-director-operator, rhosp-rhel9/osp-director-downloader, rhosp-rhel9/osp-director-operator-bundle Red Hat OpenStack Platform 18.0 rhoso-operators/octavia-rhel9-operator, rhoso-operators/prometheus-podman-exporter-rhel9 Red Hat Quay 3 quay/quay-builder-rhel8 Red Hat Service Interconnect 1 skupper-cli Red Hat Trusted Artifact Signer rhtas/cosign-rhel9, rhtas/fulcio-rhel9, rhtas/gitsign-rhel9, rhtas/rekor-cli-rhel9, rhtas/rekor-server-rhel9, rhtas/rekor-monitor-rhel9, +4 more Red Hat Zero Trust Workload Identity Manager - Tech Preview zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9, zero-trust-workload-identity-manager/spiffe-spire-server-rhel9, zero-trust-workload-identity-manager/spiffe-spire-oidc-discovery-provider-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.17 cert-manager/cert-manager-operator-rhel9 1791788287, cert-manager/jetstack-cert-manager-rhel9 1791371069, cert-manager/jetstack-cert-manager-acmesolver-rhel9 1791371080
    fixed: vendor fix RHSA-2026:82322

8 more fixed, 6 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
go golang.org/x/crypto
<0.45.0
0.45.0

Affected products

  • golang.org/x/crypto golang.org/x/crypto/ssh/agent

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.