EFS Easy File Sharing HTTP Server 7.2 HTTP POST Request /sendemail.ghp Email memory corruption

Summaryinfo

A vulnerability categorized as critical has been discovered in EFS Easy File Sharing HTTP Server 7.2. This vulnerability affects unknown code of the file /sendemail.ghp of the component HTTP POST Request Handler. The manipulation of the argument Email results in memory corruption. This vulnerability is cataloged as CVE-2025-34096. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical has been found in EFS Easy File Sharing HTTP Server 7.2. Affected is an unknown functionality of the file /sendemail.ghp of the component HTTP POST Request Handler. The manipulation of the argument Email with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A stack-based buffer overflow vulnerability exists in Easy File Sharing HTTP Server version 7.2. The flaw is triggered when a crafted POST request is sent to the /sendemail.ghp endpoint containing an overly long Email parameter. The application fails to properly validate the length of this field, resulting in a memory corruption condition. An unauthenticated remote attacker can exploit this to execute arbitrary code with the privileges of the server process.

The weakness was shared by Bl4ck H4ck3r. The advisory is shared for download at raw.githubusercontent.com. This vulnerability is traded as CVE-2025-34096 since 04/15/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/11/2025).

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-2025-21030). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Web Server

Vendor

• EFS

Name

• Easy File Sharing HTTP Server

Version

• 7.2

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Once again VulDB remains the best source for vulnerability data.

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