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Case File

CVE-2020-20277

CRITICAL · CVSS 9.8 EPSS 25.25% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-12-18 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 25.2% probability of exploitation in the next 30 days. It may be remotely exploitable.

Public Exploit Signal

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

Detected Signals
remote code execution code execution
GitHub PoC Links
External Security References

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

CVE
CVE-2020-20277
Severity
CRITICAL
CVSS
9.8
EPSS
25.25%

Original NVD Description

There are multiple unauthenticated directory traversal vulnerabilities in different FTP commands in uftpd FTP server versions 2.7 to 2.10 due to improper implementation of a chroot jail in common.c's compose_abspath function that can be abused to read or write to arbitrary files on the filesystem, leak process memory, or potentially lead to remote code execution.

Related CVEs

Other vulnerabilities affecting the same vendor(s)