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Case File

CVE-2021-25735

MEDIUM · CVSS 6.5 EPSS 5.52% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-06 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-25735
Severity
MEDIUM
CVSS
6.5
EPSS
5.52%

Original NVD Description

A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.

Related CVEs

Other vulnerabilities affecting the same vendor(s)