Arcane Vermillion FTP Daemon up to 1.31 PORT Command out-of-bounds write

Summaryinfo

A vulnerability was found in Arcane Vermillion FTP Daemon up to 1.31 and classified as critical. Impacted is an unknown function of the component PORT Command Handler. Such manipulation leads to out-of-bounds write. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is documented as CVE-2010-20115. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Arcane Vermillion FTP Daemon up to 1.31. Affected by this issue is an unknown code of the component PORT Command Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released by X4lt. The advisory is shared for download at raw.githubusercontent.com. This vulnerability is handled as CVE-2010-20115 since 08/20/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/22/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2010-5307). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Arcane

Name

• Vermillion FTP Daemon

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31

Support

• end of life

CPE 2.3info

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CPE 2.2info

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CVSSv3info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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