Author: Ameeba

Overview

The CVE-2025-7094 vulnerability is a critical flaw identified in Belkin F9K1122 version 1.00.33. This issue pertains to the function formBSSetSitesurvey of the file /goform/formBSSetSitesurvey of the webs component. Affected devices are susceptible to a stack-based buffer overflow attack, which can be triggered remotely by manipulating the argument submit-url-ok. This vulnerability is of significant concern due to its potential to compromise entire systems or lead to data leaks, particularly given that the exploit has been publicly disclosed with no response from the vendor.

Vulnerability Summary

CVE ID: CVE-2025-7094
Severity: Critical (CVSS score 8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Belkin F9K1122 | 1.00.33

How the Exploit Works

The vulnerability originates from the formBSSetSitesurvey function in the webs component of Belkin F9K1122. The exploit works by manipulating the argument submit-url-ok, which leads to a stack-based buffer overflow. This overflow can potentially overwrite necessary data and control the execution flow of the software, thereby granting unauthorized access or control. This exploit can be triggered remotely, without any user interaction or prior privileges, increasing the risk and potential impact.

Conceptual Example Code

Here’s a conceptual example of how an HTTP request exploiting this vulnerability might look:

POST /goform/formBSSetSitesurvey HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
submit-url-ok=%s

In the above example, `%s` would represent a string of characters exceeding the buffer’s capacity, leading to overflow.
Please note that the above example is purely conceptual and may not represent an actual successful exploit. It’s provided for illustrative purposes to help understand the nature of the vulnerability.

Mitigation Guidance

As the vendor has not yet provided a patch or responded to the vulnerability disclosure, it’s recommended to implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can help detect and block exploit attempts. Users are advised to monitor their systems closely for any unusual activity and to apply vendor patches as soon as they become available.

Overview

The cybersecurity landscape has been hit with another critical vulnerability, this time affecting Belkin F9K1122 1.00.33. Labeled as CVE-2025-7093, this vulnerability has severe implications for system security and data integrity. This vulnerability, found in the function formSetLanguage of the file /goform/formSetLanguage, exploits a stack-based buffer overflow that can lead to system compromise or data leakage. The problem is further compounded by the fact that the exploit has been made publicly available and the vendor has yet to respond with a patch or solution.

Vulnerability Summary

CVE ID: CVE-2025-7093
Severity: Critical (CVSS Score: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Belkin F9K1122 | 1.00.33

How the Exploit Works

The vulnerability occurs due to an overflow condition within the formSetLanguage function of the /goform/formSetLanguage file. The issue lies in the improper verification of user-supplied data, which can result in a buffer overflow on the stack. An attacker can exploit this to execute arbitrary code on the system with elevated privileges. This can lead to a full compromise of the system or potential data leakage if exploited successfully.

Conceptual Example Code

The following is a conceptual example of how a malicious HTTP request exploiting this vulnerability might look:

POST /goform/formSetLanguage HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
webpage=%s

In this example, `%s` represents a malicious payload designed to overflow the buffer and execute arbitrary code.

Mitigation Guidance

Users are advised to apply the vendor’s patch as soon as it becomes available. In the absence of a patch, users can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. These systems can detect and block attempts to exploit this vulnerability. However, this is only a temporary solution and does not fully address the underlying vulnerability.

Overview

A critical vulnerability, identified as CVE-2025-7092, has been discovered in Belkin F9K1122 1.00.33. This vulnerability has been classified as severe due to its potential for system compromise or data leakage. The security flaw lies in the function formWlanSetupWPS of the file /goform/formWlanSetupWPS of the component webs and can be exploited remotely. The exploit has been disclosed publicly, increasing the risk of potential attacks. The vendor has been notified but has not provided any response to this issue.

Vulnerability Summary

CVE ID: CVE-2025-7092
Severity: Critical (CVSS: 8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Belkin F9K1122 | 1.00.33

How the Exploit Works

The exploit manipulation involves the argument wps_enrolee_pin/webpage leading to a stack-based buffer overflow. This occurs when an attacker sends an oversized, specially crafted payload to the target system that exceeds the buffer’s boundary and overwrites adjacent memory. The overflow could allow an attacker to execute arbitrary code or disrupt the normal operation of the system.

Conceptual Example Code

While the actual code to exploit this vulnerability has been withheld, the following conceptual HTTP request illustrates a similar scenario:

POST /goform/formWlanSetupWPS HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wps_enrolee_pin=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In the above example, “AAAAAAAA…” represents an oversized payload that, when processed by the target system, would lead to a buffer overflow.

Mitigation

Until a patch is provided by the vendor, users are advised to employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation against potential attacks. These systems can detect and block malicious payloads that attempt to exploit this vulnerability.

Overview

A critical vulnerability has been identified in the Belkin F9K1122 version 1.00.33. This vulnerability, tracked as CVE-2025-7091, can potentially lead to system compromise or data leakage. It impacts the function formWlanMP of the file /goform/formWlanMP of the component webs. This vulnerability matters because it can be exploited remotely, and the exploit details have been made public. Furthermore, the vendor has not responded to early disclosure, leaving the systems vulnerable.

Vulnerability Summary

CVE ID: CVE-2025-7091
Severity: Critical, with a CVSS score of 8.8
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Belkin F9K1122 | 1.00.33

How the Exploit Works

The vulnerability exists due to a stack-based buffer overflow within the function formWlanMP of the file /goform/formWlanMP. This overflow is triggered by manipulating inputs to a series of arguments. By sending a specially crafted input to these arguments, an attacker can cause the system to write data beyond the intended buffer space, potentially leading to system crashes or, more worryingly, allowing the execution of arbitrary code.

Conceptual Example Code

Below is a conceptual example of how this vulnerability might be exploited using a HTTP POST request with specifically crafted malicious data:

POST /goform/formWlanMP HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
ateFunc=OVERFLOW_DATA&ateGain=OVERFLOW_DATA&ateTxCount=OVERFLOW_DATA&ateChan=OVERFLOW_DATA&ateRate=OVERFLOW_DATA&ateMacID=OVERFLOW_DATA&e2pTxPower1=OVERFLOW_DATA&e2pTxPower2=OVERFLOW_DATA&e2pTxPower3=OVERFLOW_DATA&e2pTxPower4=OVERFLOW_DATA&e2pTxPower5=OVERFLOW_DATA&e2pTxPower6=OVERFLOW_DATA&e2pTxPower7=OVERFLOW_DATA&e2pTx2Power1=OVERFLOW_DATA&e2pTx2Power2=OVERFLOW_DATA&e2pTx2Power3=OVERFLOW_DATA&e2pTx2Power4=OVERFLOW_DATA&e2pTx2Power5=OVERFLOW_DATA&e2pTx2Power6=OVERFLOW_DATA&e2pTx2Power7=OVERFLOW_DATA&ateTxFreqOffset=OVERFLOW_DATA&ateMode=OVERFLOW_DATA&ateBW=OVERFLOW_DATA&ateAntenna=OVERFLOW_DATA&e2pTxFreqOffset=OVERFLOW_DATA&e2pTxPwDeltaB=OVERFLOW_DATA&e2pTxPwDeltaG=OVERFLOW_DATA&e2pTxPwDeltaMix=OVERFLOW_DATA&e2pTxPwDeltaN=OVERFLOW_DATA&readE2P=OVERFLOW_DATA

In this example, “OVERFLOW_DATA” would be replaced with the data intended to overflow the buffer.

Mitigation

As of now, the vendor has not provided any patches for this vulnerability. As a temporary mitigation, it is recommended to implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) that can detect and block attempts to exploit this vulnerability. Users are encouraged to keep a close watch on any updates from the vendor and apply patches as soon as they become available.

Overview

A recently discovered and publicly disclosed security vulnerability CVE-2025-7090 poses a significant risk to the users of Belkin F9K1122 1.00.33. This vulnerability, which is classified as critical, affects the function formConnectionSetting of the file /goform/formConnectionSetting of the webs component. It is of particular concern because it can lead to a system compromise or data leakage, and the exploit has been disclosed publicly and can be launched remotely. This blog post aims to provide a comprehensive overview of this vulnerability, its potential impact, and the recommended mitigation strategies.

Vulnerability Summary

CVE ID: CVE-2025-7090
Severity: Critical (CVSS 8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

Product | Affected Versions

Belkin F9K1122 | 1.00.33

How the Exploit Works

The vulnerability lies in the manipulation of the argument max_Conn/timeOut in the function formConnectionSetting. This manipulation leads to a stack-based buffer overflow, an error condition where the program attempts to put more data in a buffer than it can hold. This overflow can overwrite adjacent memory locations and cause erratic program behavior, including memory access errors, incorrect results, program termination, or a breach of system security.

Conceptual Example Code

The following pseudocode illustrates a conceptual example of how the vulnerability might be exploited:

POST /goform/formConnectionSetting HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
max_Conn=timeOut&value=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In this example, the attacker sends an HTTP POST request with an oversized value for the max_Conn/timeOut argument, causing a buffer overflow.

Mitigation Guidance

Users are advised to apply the vendor patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. Note that these are not long-term solutions and do not fix the underlying vulnerability, but they can help protect against exploitation while a patch is developed. The vendor was contacted early about this disclosure but did not respond in any way, emphasizing the importance of implementing interim defensive measures.