8.8
HIGH
CVE-2025-6302
TOTOLINK EX1200T Stack-Based Buffer Overflow Vulnerability
Description

A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument Comment leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

INFO

Published Date :

June 20, 2025, 3:15 a.m.

Last Modified :

July 2, 2025, 5:40 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2025-6302 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Totolink ex1200t_firmware
2 Totolink ex1200t
: Total Affected Vendor : 1 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-6302.

URL Resource
https://kn0sinna.notion.site/TOTOLINK-EX1200T-stack-based-BufferOverflow-vulnerability-20fb1876cd6e80d5b4d1f7ec16de4ec2 Exploit
https://vuldb.com/?ctiid.313302 Permissions Required VDB Entry
https://vuldb.com/?id.313302 Third Party Advisory VDB Entry
https://vuldb.com/?submit.595473 Third Party Advisory VDB Entry
https://www.totolink.net/ Product

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-6302 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-6302 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Jul. 02, 2025

    Action Type Old Value New Value
    Added CPE Configuration AND OR *cpe:2.3:o:totolink:ex1200t_firmware:4.1.2cu.5232_b20210713:*:*:*:*:*:*:* OR cpe:2.3:h:totolink:ex1200t:-:*:*:*:*:*:*:*
    Added Reference Type VulDB: https://kn0sinna.notion.site/TOTOLINK-EX1200T-stack-based-BufferOverflow-vulnerability-20fb1876cd6e80d5b4d1f7ec16de4ec2 Types: Exploit
    Added Reference Type VulDB: https://vuldb.com/?ctiid.313302 Types: Permissions Required, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?id.313302 Types: Third Party Advisory, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?submit.595473 Types: Third Party Advisory, VDB Entry
    Added Reference Type VulDB: https://www.totolink.net/ Types: Product
  • New CVE Received by [email protected]

    Jun. 20, 2025

    Action Type Old Value New Value
    Added Description A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument Comment leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CWE CWE-119
    Added CWE CWE-121
    Added Reference https://kn0sinna.notion.site/TOTOLINK-EX1200T-stack-based-BufferOverflow-vulnerability-20fb1876cd6e80d5b4d1f7ec16de4ec2
    Added Reference https://vuldb.com/?ctiid.313302
    Added Reference https://vuldb.com/?id.313302
    Added Reference https://vuldb.com/?submit.595473
    Added Reference https://www.totolink.net/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-6302 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-6302 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
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Latest DB Update: Jul. 08, 2025 13:48