AUGUST 4, 2026
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Case File

CVE-2021-39230

HIGH · CVSS 8.8 EPSS 0.76% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-21 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. 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.

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

CVE
CVE-2021-39230
Severity
HIGH
CVSS
8.8
EPSS
0.76%

Original NVD Description

Butter is a system usability utility. Due to a kernel error the JPNS kernel is being discontinued. Affected users are recommend to update to the Trinity kernel. There are no workarounds.