What’s Vulnerable › Vulnerabilities

CVE-2025-34096: Easy File Sharing HTTP Server 7.2 Buffer Overflow via POST to /sendemail.ghp

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-10 · updated 2026-06-17
• Weakness: CWE-119

Description

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.

Affected products

• EFS Software Inc. Easy File Sharing HTTP Server: 7.2

References

• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/easyfilesharing_post.rb
• https://vulncheck/advisories/easy-file-sharing-http-server-buffer-overflow
• https://www.exploit-db.com/exploits/42186

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