Description

A vulnerability in the CivetWeb library's function mg_handle_form_request allows remote attackers to trigger a denial of service (DoS) condition. By sending a specially crafted HTTP POST request containing a null byte in the payload, the server enters an infinite loop during form data parsing. Multiple malicious requests will result in complete CPU exhaustion and render the service unresponsive to further requests. This issue was fixed in commit 782e189. This issue affects only the library, standalone executable pre-built by vendor is not affected.

INFO

Published Date :

2025-09-29T11:47:56.141Z

Last Modified :

2025-09-29T12:53:45.646Z

Source :

CERT-PL
AFFECTED PRODUCTS

The following products are affected by CVE-2025-9648 vulnerability.

Vendors Products
Civetweb Project
  • Civetweb
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-9648.

URL Resource
https://cert.pl/en/posts/2025/09/CVE-2025-9648 cve-icon cve-icon cve-icon
https://github.com/civetweb/civetweb cve-icon cve-icon cve-icon
https://github.com/civetweb/civetweb/commit/782e18903515f43bafbf2e668994e82bdfa51133 cve-icon cve-icon cve-icon
https://github.com/civetweb/civetweb/issues/1348 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-9648 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-9648 cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact