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Case File

CVE-2021-21243

CRITICAL · CVSS 10 EPSS 54.49% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-15 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 10.0. It affects Kubernetes. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 54.5% probability of exploitation in the next 30 days.

Public Exploit Signal

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

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

CVE
CVE-2021-21243
Severity
CRITICAL
CVSS
10
EPSS
54.49%
Kubernetes

Original NVD Description

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, a Kubernetes REST endpoint exposes two methods that deserialize untrusted data from the request body. These endpoints do not enforce any authentication or authorization checks. This issue may lead to pre-auth RCE. This issue was fixed in 4.0.3 by not using deserialization at KubernetesResource side.

Related CVEs

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