SEPTEMBER 21, 2026
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Case File

CVE-2021-23241

MEDIUM · CVSS 5.3 EPSS 13.44% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-07 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 13.4% probability of exploitation in the next 30 days.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2021-23241
Severity
MEDIUM
CVSS
5.3
EPSS
13.44%

Original NVD Description

MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.

Related CVEs

Other vulnerabilities affecting the same vendor(s)