Is CVE-2025-9648 actively exploited?

No active exploitation of CVE-2025-9648 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-9648 be exploited remotely?

Yes. CVE-2025-9648 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-9648?

CVE-2025-9648 has a CVSS score of 8.7 (HIGH).

HOME VULNERABILITIESCVE-2025-9648

HIGH

CVE-2025-9648

CWE-158Published: September 29, 2025· Updated: Jun 17, 2026

8.7

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-9648 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X