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Case File

CVE-2021-33477

HIGH · CVSS 8.8 EPSS 4.09% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-20 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

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

Detected Signals
code execution
External Security References

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

CVE
CVE-2021-33477
Severity
HIGH
CVSS
8.8
EPSS
4.09%

Original NVD Description

rxvt-unicode 9.22, rxvt 2.7.10, mrxvt 0.5.4, and Eterm 0.9.7 allow (potentially remote) code execution because of improper handling of certain escape sequences (ESC G Q). A response is terminated by a newline.

Related CVEs

Other vulnerabilities affecting the same vendor(s)