AUGUST 4, 2026
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Case File

CVE-2021-39392

CRITICAL · CVSS 9.8 EPSS 2.26% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-15 · 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.

GitHub PoC Links
gist.github.com ↗

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

CVE
CVE-2021-39392
Severity
CRITICAL
CVSS
9.8
EPSS
2.26%

Original NVD Description

The management tool in MyLittleBackup up to and including 1.7 allows remote attackers to execute arbitrary code because machineKey is hardcoded (the same for all customers' installations) in web.config, and can be used to send serialized ASP code.