CVE-2026-2883
Remote Stack-Based Buffer Overflow in D-Link DWR-M960 QoS Module
Publication date: 2026-02-21
Last updated on: 2026-02-23
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| dlink | dwr-m960_firmware | 1.01.07 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| 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. |
| 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). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
[{'type': 'paragraph', 'content': 'CVE-2026-2883 is a critical stack-based buffer overflow vulnerability found in the D-Link DWR-M960 router, version 1.01.07. The flaw exists in the function sub_427D74 within the file /boafrm/formIpQoS. It is triggered by manipulating the "submit-url" argument with crafted input, which is copied unsafely using strcpy into a global buffer without length validation. This causes a stack-based buffer overflow condition.'}, {'type': 'paragraph', 'content': 'This vulnerability can be exploited remotely by sending a specially crafted POST request including the save_apply parameter and an oversized submit-url parameter, leading to memory corruption. The overflow can cause denial of service by crashing the web server or rebooting the device, or it can enable arbitrary code execution with root privileges by hijacking the execution flow.'}] [1, 2, 3]
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': "Exploitation of this vulnerability can lead to serious impacts including denial of service (DoS) conditions where the router's web server crashes or the device reboots, making the device unavailable."}, {'type': 'paragraph', 'content': 'More critically, it can allow remote attackers to execute arbitrary code on the device with root privileges, potentially compromising the confidentiality, integrity, and availability of the router and any network it protects.'}] [1, 2, 3]
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?
[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring for suspicious HTTP POST requests to the endpoint /boafrm/formIpQoS on the D-Link DWR-M960 router, specifically those containing the parameters save_apply and an unusually large submit-url value.'}, {'type': 'paragraph', 'content': 'A practical detection method is to capture and analyze network traffic for such requests, which may indicate an attempted exploit.'}, {'type': 'list_item', 'content': 'Use a network packet capture tool like tcpdump or Wireshark to filter HTTP POST requests to /boafrm/formIpQoS.'}, {'type': 'list_item', 'content': "Example tcpdump command to capture relevant traffic: tcpdump -i <interface> -A 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep '/boafrm/formIpQoS'"}, {'type': 'list_item', 'content': 'Inspect captured HTTP POST data for the presence of the save_apply parameter and an oversized submit-url parameter.'}, {'type': 'paragraph', 'content': "Additionally, monitoring the router's logs for crashes or reboots of the web server (boa) may indicate exploitation attempts."}] [1, 2, 3]
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': 'There are no known mitigations or countermeasures identified for this vulnerability.'}, {'type': 'paragraph', 'content': 'The recommended immediate step is to replace the affected D-Link DWR-M960 router running firmware version 1.01.07 with an alternative device that is not vulnerable.'}, {'type': 'paragraph', 'content': "Until replacement, restrict network access to the router's management interface to trusted hosts only and monitor for suspicious activity."}] [1]