AUGUST 4, 2026
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Case File

CVE-2021-40833

MEDIUM · CVSS 5.5 EPSS 0.39% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-26 · 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

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

CVE
CVE-2021-40833
Severity
MEDIUM
CVSS
5.5
EPSS
0.39%

Original NVD Description

A vulnerability affecting F-Secure antivirus engine was discovered whereby unpacking UPX file can lead to denial-of-service. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.