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Case File

CVE-2021-33577

MEDIUM · CVSS 5.3 EPSS 0.58% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-18 · 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.

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-2021-33577
Severity
MEDIUM
CVSS
5.3
EPSS
0.58%

Original NVD Description

An issue was discovered in Cleo LexiCom 5.5.0.0. The requirement for the sender of an AS2 message to identify themselves (via encryption and signing of the message) can be bypassed by changing the Content-Type of the message to text/plain.

Related CVEs

Other vulnerabilities affecting the same vendor(s)