CVE-2025-9298
Published: 21 August 2025
Summary
CVE-2025-9298 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda M3 Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 33.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Flaw remediation directly addresses the stack-based buffer overflow by applying firmware patches or updates to fix the vulnerable formQuickIndex function.
Information input validation ensures the PPPOEPassword argument is checked for length and format to prevent triggering the buffer overflow.
Memory protection mechanisms like stack canaries and non-executable stacks mitigate exploitation of the stack-based buffer overflow even if it occurs.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in public web form (/goform/QuickIndex) enables remote code execution on network device with no user interaction.
NVD Description
A flaw has been found in Tenda M3 1.0.0.12. Affected is the function formQuickIndex of the file /goform/QuickIndex. Executing manipulation of the argument PPPOEPassword can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been…
more
published and may be used.
Deeper analysisAI
CVE-2025-9298 is a stack-based buffer overflow vulnerability affecting the Tenda M3 router firmware version 1.0.0.12. The flaw resides in the formQuickIndex function within the /goform/QuickIndex file, where manipulation of the PPPOEPassword argument triggers the overflow. Published on 2025-08-21, it is associated with CWEs-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow) and carries a CVSS v3.1 base score of 8.8.
The vulnerability enables remote exploitation by attackers possessing low privileges (PR:L). Exploitation requires network access (AV:N) with low attack complexity (AC:L) and no user interaction (UI:N), without changing scope (S:U). Successful attacks can result in high impacts to confidentiality (C:H), integrity (I:H), and availability (A:H), potentially allowing arbitrary code execution or system compromise.
Advisories referenced in VulDB entries (ctiid.320903, id.320903, submit.632335) and a GitHub repository detail the vulnerability, including a proof-of-concept exploit. No specific patches or mitigation steps from vendor advisories are mentioned in the available information.
Details
- CWE(s)