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TI-2020-13817 Aliases CVE-2020-20277GHSA-p2qh-598h-6m3x

There are multiple unauthenticated directory traversal vulnerabilities in different FTP…

Priority MEDIUM 64CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.26236 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:troglobit:uftpd:*:*:*:*:*:*:*:*2.7 – 2.10Vulnerabletroglobit
  • cpe:2.3:a:troglobit:uftpd:*:*:*:*:*:*:*:* Versions 2.7 – 2.10 Vulnerable ·troglobit

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-20277
  2. 2026-10-03 Alias added: GHSA-p2qh-598h-6m3x

References

Exploit 1

Patch 1

Advisory 1

  • TI-2020-13816 An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in… CVSS 3.1CRITICAL 9.8
  • TI-2020-04260 Buffer overflow vulnerability in uftpd CVSS 3.1HIGH 8.8
  • TI-2020-11077 In uftpd before 2.12, handle_CWD in ftpcmd.c mishandled the path provided by the user… CVSS 3.1HIGH 7.5
  • TI-2020-04277 Directory Traversal (Chroot Escape) vulnerability in uftpd CVSS 3.1HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences