What is CVE-2021-25743?

CVE-2021-25743 is a low-severity vulnerability in Kubernetes, classified under CWE-150. CVSS score: 3.0/10. Published 2022-01-07.

How severe is CVE-2021-25743?

Low severity. CVSS v3 base score is 3.0 out of 10.

Is CVE-2021-25743 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Kubernetes

CVE-2021-25743

kubectl does not neutralize escape, meta or control sequences contained in the raw data it outputs to a terminal. This includes but is not limited to the unstructured string fields in objects such as Events.

Published 2022-01-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.0 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

Kubernetes — versions next of 1.23.1, next of 1.22.5, 1.26.0

Weakness classification (CWE)

CWE-150

Public proof-of-concept exploits

References

github.com/kubernetes/kubernetes/issues/101695 (Vendor Advisory)
security.netapp.com/advisory/ntap-20220217-0003/ (Third Party Advisory)

Frequently asked questions

What is CVE-2021-25743?: CVE-2021-25743 is a low-severity vulnerability in Kubernetes, classified under CWE-150. CVSS score: 3.0/10. Published 2022-01-07.
How severe is CVE-2021-25743?: Low severity. CVSS v3 base score is 3.0 out of 10.
Is CVE-2021-25743 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.