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CVE-2025-10756: Critical Buffer Overflow Vulnerability in UTT HiPER 840G

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Overview

In the realm of cybersecurity, a recently discovered vulnerability, designated CVE-2025-10756, has emerged as a critical security flaw with severe implications for systems running UTT HiPER 840G up to version 3.1.1-190328. This vulnerability, if exploited, can lead to potential system compromise or data leakage, seriously undermining the integrity of the affected system.
The flaw lies in an unknown function of the file /goform/getOneApConfTempEntry, with the manipulation of the argument tempName leading to a buffer overflow condition. Given the fact that this vulnerability can be exploited remotely and that the exploit has been publicly disclosed, it poses a significant risk to systems that have not yet implemented the necessary protections.

Vulnerability Summary

CVE ID: CVE-2025-10756
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

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Product | Affected Versions

UTT HiPER 840G | Up to 3.1.1-190328

How the Exploit Works

The vulnerability resides in an unknown function within the file /goform/getOneApConfTempEntry. By manipulating the tempName argument, attackers can trigger a buffer overflow condition. A buffer overflow occurs when more data is written into a block of memory, or buffer, than it can hold. This excess data then overflows into adjacent memory spaces, potentially overwriting other data or causing the system to crash. In this case, this vulnerability can be exploited by a remote attacker, allowing them to execute arbitrary code or cause a denial of service.

Conceptual Example Code

The following is a conceptual example illustrating how an attacker might exploit this vulnerability. This is not a real exploit, but a simplified representation to demonstrate the attack mechanism.

POST /goform/getOneApConfTempEntry HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "tempName": "A"*10000 }

In this example, the attacker is sending an unusually large amount of data “A”*10000 as the tempName argument in an attempt to cause a buffer overflow.

Recommendations

Users are strongly advised to apply the vendor patch as soon as it becomes available. In the meantime, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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