AUGUST 4, 2026
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Case File

CVE-2021-3661

HIGH · CVSS 8.4 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-12-12 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.4. 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.

Detected Signals
arbitrary code execution code execution

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

CVE
CVE-2021-3661
Severity
HIGH
CVSS
8.4
EPSS
0.30%

Original NVD Description

A potential security vulnerability has been identified in certain HP Workstation BIOS (UEFI firmware) which may allow arbitrary code execution. HP is releasing firmware mitigations for the potential vulnerability.

Related CVEs

Other vulnerabilities affecting the same vendor(s)