AUGUST 4, 2026
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Case File

CVE-2021-40399

HIGH · CVSS 7.8 EPSS 1.31% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-05-12 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

Detected Signals
exploit remote code execution code execution

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

CVE
CVE-2021-40399
Severity
HIGH
CVSS
7.8
EPSS
1.31%
Office

Original NVD Description

An exploitable use-after-free vulnerability exists in WPS Spreadsheets ( ET ) as part of WPS Office, version 11.2.0.10351. A specially-crafted XLS file can cause a use-after-free condition, resulting in remote code execution. An attacker needs to provide a malformed file to the victim to trigger the vulnerability.