CVE-2020-8562
Bypass of Kubernetes API Server proxy TOCTOU
02 Description
Bypass of Kubernetes API Server proxy TOCTOU
03 Exploitation and scoring
- 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
- 1.18% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 67.6% of scored records. A rank, not a probability.
- NVD base score
- 3.1 (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:U/C:L/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. 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.
04 Metadata
- Published
- 2022-02-01 10:33Z4 YR AGO
- Last updated
- 2026-06-01 21:45Z4 MO AGO
- Reserved
- 2020-02-03
- Assigning CNA
- kubernetes
- Record state
- PUBLISHED
- Severity
- Low (CVSS 2.2)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase
- Data version
- 5.2
- Document digest
- df05c8eed3f59a0024732389720c3c96bbb1cd48631aceead44739282a0006b4
05 Affected products
06 References
- kubernetes.iohttps://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves/
- github.comhttps://github.com/kubernetes/kubernetes/issues/101493
- groups.google.comhttps://groups.google.com/g/kubernetes-security-announce/c/-MFX60_wdOY
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20220225-0002/
07 Fixed in
Arch Linux
- kube-apiserver No fix yet
- kube-controller-manager No fix yet
- kube-proxy No fix yet
- kube-scheduler No fix yet
- kubelet No fix yet
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- kubernetes Fixed in 1.20.5+really1.20.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- kubernetes Fixed in 1.20.5+really1.20.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- kubernetes Fixed in 1.20.5+really1.20.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.