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Fencer Vulns
low 3.5

CVE-2020-25688 json

A flaw was found in rhacm versions before 2.0.5 and before 2.1.0.

published 2020-11-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18350

cvss
3.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

A flaw was found in rhacm versions before 2.0.5 and before 2.1.0. Two internal service APIs were incorrectly provisioned using a test certificate from the source repository. This would result in all installations using the same certificates. If an attacker could observe network traffic internal to a cluster, they could use the private key to decode API requests that should be protected by TLS sessions, potentially obtaining information they would not otherwise be able to. These certificates are not used for service authentication, so no opportunity for impersonation or active MITM attacks were made possible.

Patch / fix

  • redhat advanced_cluster_management_for_kubernetes 2.0.5

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-2020-25688 updated cvss 3.5

rhacm: certificate re-use in grcuiapi and topologyapi

  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/mcm-topology-api-rhel8
    affected: no fix available
  • Red Hat Advanced Cluster Management for Kubernetes 2.0 for RHEL 8 rhacm2/acm-operator-bundle v2.0.5-5
    fixed: vendor fix RHBA-2020:5095
  • Red Hat Advanced Cluster Management for Kubernetes 2.1 for RHEL 8 rhacm2/acm-must-gather-rhel8 v2.1.0-11
    fixed: vendor fix RHEA-2020:4954

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

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 3.5 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 2.7 AV:A/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • n/a rhacm

Classification

Weakness
  • CWE-321 Use of Hard-coded Cryptographic Key
  • CWE-798 Use of Hard-coded Credentials

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.