Author: Ameeba

Overview

This report discusses the critical buffer overflow vulnerability, CVE-2025-50615, discovered in Netis WF2880 v2.1.40207. This vulnerability is particularly worrisome due to its potential to lead to a Denial of Service (DoS) attack and compromise the system, posing a significant threat to system stability and data security.

Vulnerability Summary

CVE ID: CVE-2025-50615
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The exploit takes advantage of a buffer overflow vulnerability in the FUN_00470c50 function of the cgitest.cgi file in Netis WF2880 v2.1.40207. By controlling the value of wl_mac_filter_set in the payload, the attackers can overload the buffer, causing the software to crash. This crash can trigger a Denial of Service attack, potentially compromising the system and leading to data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This represents a malicious HTTP POST request that could be used to trigger the vulnerability:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "wl_mac_filter_set": "malicious_payload" }

Mitigation Guidance

To mitigate this vulnerability, the recommended course of action is to apply the patch provided by the vendor as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation.

Overview

The following report details a significant buffer overflow vulnerability discovered in Netis WF2880 v2.1.40207. This vulnerability, assigned the ID CVE-2025-50614, has the potential to impact any organization or individual utilizing this version of the Netis WF2880. Its exploitation can lead to a system crash, enabling a Denial of Service (DoS) attack and potentially compromising system security or leading to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-50614
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: No
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The vulnerability resides in the FUN_0047151c function of the cgitest.cgi file. Attackers can exploit this vulnerability by sending a specially crafted payload that controls the value of the wds_set variable. This causes a buffer overflow, leading to a program crash. If maliciously executed, this could potentially enable a Denial of Service (DoS) attack, thereby compromising the system or leading to data leakage.

Conceptual Example Code

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wds_set=OVERFLOW_VALUE

In the above conceptual example, the “OVERFLOW_VALUE” represents a payload that would cause a buffer overflow in the system.

Mitigation Guidance

Users of the affected product are advised to apply the vendor patch as soon as it becomes available. Until then, the use of Web Application Firewall (WAF) or Intrusion Detection Systems (IDS) can provide temporary mitigation. Additionally, it’s recommended to regularly monitor system logs for any unusual activity that could indicate an attempt to exploit this vulnerability.

Overview

The vulnerability in discussion, CVE-2025-50613, affects the Netis WF2880 v2.1.40207. It’s a buffer overflow vulnerability that can allow attackers to cause a program crash, potentially leading to a Denial of Service (DoS) attack. This presents a significant risk to organizations relying on this software, as it could lead to system compromise and data leakage.

Vulnerability Summary

CVE ID: CVE-2025-50613
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The vulnerability resides in the FUN_00475e1c function of the cgitest.cgi file. Attackers can exploit this vulnerability by controlling the value of `wds_key_wep` in the payload. When an attacker sends an overly large value for `wds_key_wep`, it exceeds the buffer limit, causing a buffer overflow. This results in the program crashing, which can potentially lead to a Denial of Service (DoS) attack.

Conceptual Example Code

Here’s a conceptual example that demonstrates how the vulnerability might be exploited. This example assumes the attacker is sending a POST request with a large payload to the vulnerable endpoint.

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wds_key_wep=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In this example, the attacker sends a large amount of ‘A’ characters as the `wds_key_wep` value, triggering a buffer overflow and potentially causing a program crash or a DoS attack.
Please note that this is a conceptual example and may not represent an actual exploit scenario. It is intended for educational purposes only.

Overview

The vulnerability CVE-2025-50612 is a severe security flaw found in the Netis WF2880 v2.1.40207. It is a buffer overflow vulnerability located within the FUN_004743f8 function of the cgitest.cgi file. This vulnerability, if exploited, can lead to a Denial of Service (DoS) attack, potential system compromise, or even data leakage. The systems at risk are those utilizing the affected Netis device.

Vulnerability Summary

CVE ID: CVE-2025-50612
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Crash of the program, potential DoS attack, system compromise, and data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

An attacker can exploit this vulnerability by manipulating the value of ‘wl_sec_set’ in the payload of a network request. This action triggers a buffer overflow in the FUN_004743f8 function of the cgitest.cgi file. The overflow can cause the Netis WF2880 program to crash, potentially leading to a Denial of Service (DoS) attack or even a system compromise.

Conceptual Example Code

Below is a conceptual example of how this vulnerability may be exploited. This example represents a malicious HTTP POST request:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wl_sec_set=AAAAA... [repeat A until buffer overflow]

In this example, ‘AAAAA…’ is the malicious payload that triggers the buffer overflow. The payload length would be crafted by the attacker to exceed the buffer’s capacity, causing the overflow. Please note that this is a simplified representation of the exploit, and actual exploit execution may require more complex steps.

Overview

The vulnerability CVE-2025-50611 primarily targets the Netis WF2880 v2.1.40207 users. This is a critical vulnerability as it can lead to a potential DoS attack, causing the system to crash and creating a pathway for other potential attacks. The issue lies in a buffer overflow vulnerability within the FUN_00473154 function of the cgitest.cgi file, which if exploited, can lead to system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-50611
Severity: High – CVSS score of 7.5
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The vulnerability is a type of buffer overflow exploit that occurs in the FUN_00473154 function of the cgitest.cgi file. Attackers can trigger this vulnerability by manipulating the values of wl_sec_set_5g and wl_sec_rp_set_5g in the payload. This overflows the buffer, causing the program to crash and possibly leading to a Denial of Service (DoS) attack. In some instances, it may also allow the attacker to execute arbitrary code or access sensitive information.

Conceptual Example Code

Given the nature of the vulnerability, an attacker might exploit it through a malicious HTTP POST request like this:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wl_sec_set_5g=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...[long string]...
&wl_sec_rp_set_5g=BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB...[long string]...

In this example, the long string of “A”s and “B”s is designed to overflow the buffer, triggering the vulnerability and causing the system to crash.

Overview

The CVE-2025-50610 vulnerability is a buffer overflow issue that was uncovered in Netis WF2880 v2.1.40207. It has the potential to significantly impact users and systems that utilize this software, due to its exploitable nature. The vulnerability is of importance due to its ability to cause a system crash, leading to a possible Denial of Service (DoS) attack, and the potential for system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-50610
Severity: High (7.5/10)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System crash, potential Denial of Service (DoS) attack, possible system compromise or data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

This exploit works by an attacker manipulating the value of ‘wl_base_set_5g’ in the payload of the cgitest.cgi file. By controlling this value, a buffer overflow can be triggered in the FUN_00476598 function. Buffer overflows can lead to a crash in the program, causing a potential Denial of Service (DoS). There is also a potential for system compromise or data leakage as a result of this vulnerability.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request where the attacker manipulates the ‘wl_base_set_5g’ value.

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wl_base_set_5g=AAAA... // long string of A's to overflow buffer

Overview

This report discusses the CVE-2025-50609 vulnerability, a critical buffer overflow issue discovered in Netis WF2880 v2.1.40207. This vulnerability affects users of this version, posing a significant cybersecurity threat due to the potential for system compromise or leakage of sensitive data.

Vulnerability Summary

CVE ID: CVE-2025-50609
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The vulnerability is present in Function_00465620 of the cgitest.cgi file. Attackers can exploit this vulnerability by controlling the value of ‘specify_parame’ in the payload. This manipulation triggers a buffer overflow condition leading to a program crash, which can potentially lead to a Denial of Service (DoS) attack or even system compromise if properly chained with other exploits.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited using a malicious HTTP POST request:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
specify_parame=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In the above example, the `specify_parame` parameter value is overflowed with ‘A’ characters, causing the buffer overflow.

Mitigation

Users are advised to apply the patch provided by the vendor as soon as possible. In the meantime, Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) can be used to detect and prevent attempts to exploit this vulnerability.

Overview

A severe vulnerability has been discovered in Netis WF2880 v2.1.40207, specifically in the FUN_00471994 function of the cgitest.cgi file. This vulnerability, designated as CVE-2025-50608, can lead to a buffer overflow which could potentially crash the system, resulting in a Denial of Service (DoS) attack, and system compromise or data leakage. It’s crucial for users of this software to be aware of this vulnerability and apply the necessary mitigation strategies to prevent potential threats.

Vulnerability Summary

CVE ID: CVE-2025-50608
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: The successful exploitation of this vulnerability can lead to a system crash, potential Denial of Service (DoS) attack, and possible system compromise or data leakage.

Affected Products

Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The exploit takes advantage of a buffer overflow vulnerability in the FUN_00471994 function of the cgitest.cgi file. In an attack scenario, the threat actor sends a specifically crafted payload that can control the value of ‘wl_base_set’. This causes the function to overflow the buffer, which can result in the system crashing and potentially leading to a Denial of Service (DoS) attack or data leakage.

Conceptual Example Code

The following is a hypothetical, conceptual example of how the vulnerability could be exploited. This example uses an HTTP POST request with a malicious payload:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wl_base_set=AAAAAAAAAAAAAAAAAAAA... // buffer overflow payload

This would cause the FUN_00471994 function to overflow its buffer, potentially leading to a system crash and allowing an attacker to execute a Denial of Service (DoS) attack or gain unauthorized access to the system.

Overview

A critical vulnerability, CVE-2025-52585, has been discovered in the BIG-IP LTM Client SSL profile. This vulnerability affects systems with SSL Forward Proxy enabled and Anonymous Diffie-Hellman (ADH) ciphers enabled. The vulnerability can lead to system compromise and potential data leakage, making it a significant cybersecurity threat to affected organizations.

Vulnerability Summary

CVE ID: CVE-2025-52585
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

BIG-IP LTM | All versions with SSL Forward Proxy and ADH ciphers enabled

How the Exploit Works

The exploit occurs when undisclosed requests are made to a virtual server with a BIG-IP LTM Client SSL profile configured. If the server has SSL Forward Proxy and Anonymous Diffie-Hellman (ADH) ciphers enabled, these requests can cause the Traffic Management Microkernel (TMM) to terminate unexpectedly, potentially leading to system compromise or data leakage.

Conceptual Example Code

The following is a conceptual example of how a malicious actor might exploit the vulnerability, using an undisclosed request to the vulnerable server.

GET /undisclosed/request HTTP/1.1
Host: target.example.com
Cipher: ADH

Note: The actual exploit would likely involve more complex interactions and depend on the specific configuration of the targeted server.

Mitigation Guidance

Affected users should immediately apply the vendor patch to mitigate this vulnerability. If the patch cannot be applied immediately, users should consider using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation. However, these should not be considered long-term solutions, as they may not fully protect against the vulnerability.

Overview

This report discusses a critical vulnerability identified as CVE-2025-50635, found in Netis WF2780 v2.2.35445. The vulnerability is a null pointer dereference flaw that can potentially lead to a denial-of-service (DoS) attack, impacting the availability of the system. This vulnerability is significant as it could allow attackers to crash the program, potentially leading to system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-50635
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: DoS attack, potential system compromise, and data leakage

Affected Products

Product | Affected Versions

Netis WF2780 | v2.2.35445

How the Exploit Works

The vulnerability exists in the FUN_0048a728 function of the cgitest.cgi file. An attacker can exploit this vulnerability by manipulating the CONTENT_LENGTH variable. A null pointer dereference occurs when the program attempts to reference an address location that has not been assigned a value. This manipulation leads to a system crash, causing a possible denial-of-service (DoS) scenario. In some cases, it may even be possible to execute arbitrary code or cause a system compromise.

Conceptual Example Code

Here is a conceptual example of a HTTP POST request that might be used to exploit this vulnerability:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Length: [malicious value]
{ "malicious_payload": "..." }

In this conceptual example, the Content-Length value is manipulated to trigger a null pointer dereference in the FUN_0048a728 function.

Mitigation

The best solution is to apply the vendor-released patch as soon as possible to fix this vulnerability. In the meantime, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation strategy to help detect and block attacks trying to exploit this vulnerability. Regularly updating and patching systems is also strongly recommended as part of a robust cybersecurity strategy.