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TI-2020-19290 Aliases CVE-2020-37155GHSA-39mx-hmw6-9hmp

Core FTP Lite 1.3 - Denial of Service (PoC)

Priority MEDIUM 63CWE-120Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

Core FTP Lite 1.3 contains a buffer overflow vulnerability in the username input field that allows attackers to crash the application by supplying oversized input. Attackers can generate a 7000-byte payload of repeated 'A' characters to trigger an application crash without requiring additional interaction.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0043 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Core FTPCore FTP Lite1.3c Build 1437—No fix listedCNA
  • Core FTP Lite VendorCore FTP Affected 1.3c Build 1437 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-37155
  2. 2026-10-03 Alias added: GHSA-39mx-hmw6-9hmp

References

Exploit 1

Other 1

  • TI-2020-19242 Core FTP LE 2.2 - Denial of Service CVSS 4.0MEDIUM 6.7
  • TI-2008-02411 Directory traversal vulnerability in Core FTP client 2.1 Build 1565 allows remote FTP… CVSS 2.0MEDIUM 6.8

Sources

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