CVE-2026-2191
Stack-Based Buffer Overflow in Tenda AC9 DDoS Function
Publication date: 2026-02-08
Last updated on: 2026-02-10
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | ac9_firmware | 15.03.06.42_multi |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-121 | A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). |
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Tenda AC9 router firmware version 15.03.06.42_multi, specifically in the function formGetDdosDefenceList.
It involves manipulation of the argument security.ddos.map, which leads to a stack-based buffer overflow.
This means an attacker can remotely exploit this weakness to potentially execute arbitrary code or cause the device to crash.
The exploit for this vulnerability has been made publicly available.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to severe impacts including unauthorized code execution, denial of service, or complete compromise of the affected device.
Since the attack can be initiated remotely, it increases the risk of attackers gaining control over the router without physical access.
This could result in loss of confidentiality, integrity, and availability of network communications passing through the device.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know