CVE-2020-8558

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.8% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-07-27 19:55Z6 YR AGO

Last updated

2024-09-16 22:40Z2 YR AGO

Reserved

2020-02-03

Assigning CNA

kubernetes

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weaknesses

• CWE-420Unprotected Alternate ChannelBase
• CWE-300Channel Accessible by Non-EndpointClass

Data version

5.1

Document digest

281ebd41990045b6538154923df18b248fdce08809b4f13da497c24d9acd741a

• github.comhttps://github.com/kubernetes/kubernetes/issues/92315x_refsource_CONFIRM
• groups.google.com[Security Advisory] CVE-2020-8558: Kubernetes: Node setting allows for neighboring hosts to bypass localhost boundaryhttps://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJmailing-listx_refsource_MLIST
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20200821-0001/x_refsource_CONFIRM