CVE-2025-34096
CVE-2025-34096 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-21030
- Weakness: CWE-119
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-34096?
- 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.
- How severe is CVE-2025-34096?
- CVE-2025-34096 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2025-34096 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34096?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-34096 have an EU (EUVD) identifier?
- Yes. CVE-2025-34096 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21030.
- When was CVE-2025-34096 published?
- CVE-2025-34096 was published on 2025-07-10 and last updated on 2026-06-17.
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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