CVE-2020-8555

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

3.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 89.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2020-06-04 21:50Z6 YR AGO

Last updated

2024-09-16 18:39Z2 YR AGO

Reserved

2020-02-03

Assigning CNA

kubernetes

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-918Server-Side Request Forgery (SSRF)Base
• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

524d588f45b3a47d5b2f94eda4036a2cfe38ab536d3fa1cca928cbe7f3dea929

• www.openwall.com[oss-security] 20200601 CVE-2020-8555: Kubernetes: Half-Blind SSRF in kube-controller-managerhttp://www.openwall.com/lists/oss-security/2020/06/01/4mailing-listx_refsource_MLIST
• groups.google.comhttps://groups.google.com/d/topic/kubernetes-security-announce/kEK27tqqs30/discussionmailing-listx_refsource_MLIST
• github.comhttps://github.com/kubernetes/kubernetes/issues/91542x_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2020-aeea04cd13https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX/vendor-advisoryx_refsource_FEDORA
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20200724-0005/x_refsource_CONFIRM
• www.openwall.com[oss-security] 20210504 [kubernetes] CVE-2020-8562: Bypass of Kubernetes API Server proxy TOCTOUhttp://www.openwall.com/lists/oss-security/2021/05/04/8mailing-listx_refsource_MLIST