CVE-2025-5911
BaseFortify
Publication date: 2025-06-10
Last updated on: 2025-06-16
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| totolink | ex1200t_firmware | 4.1.2cu.5232_b20210713 |
| totolink | ex1200t | * |
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-120 | The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-5911 is a critical buffer overflow vulnerability in the TOTOLINK EX1200T router firmware up to version 4.1.2cu.5232_B20210713. It occurs in the HTTP POST request handler component at the endpoint /boafrm/formDMZ, where the device copies input data to an output buffer without checking the input size, leading to a buffer overflow. This flaw can be exploited remotely by sending a specially crafted POST request, potentially causing denial of service or other impacts. [1, 2]
How can this vulnerability impact me? :
This vulnerability can impact the confidentiality, integrity, and availability of the affected TOTOLINK EX1200T device. An attacker can remotely exploit the buffer overflow to cause denial of service (DoS), potentially disrupting network connectivity or device operation. Since exploitation requires no authentication and is easy to perform, it poses a significant security risk. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring HTTP POST requests to the endpoint /boafrm/formDMZ on TOTOLINK EX1200T devices running vulnerable firmware versions. Detection involves checking for unusual or malicious POST requests targeting this route. Since exploitation involves sending a specially crafted POST request, network intrusion detection systems (NIDS) can be configured to alert on POST requests to /boafrm/formDMZ. Specific commands are not provided in the resources, but using tools like curl or tcpdump to capture and analyze HTTP POST traffic to this endpoint can help detect attempts. For example, using tcpdump to filter HTTP POST requests to the device's IP on port 80 or 443 and inspecting the URI for /boafrm/formDMZ may help identify suspicious activity. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected TOTOLINK EX1200T device running firmware up to 4.1.2cu.5232_B20210713 with an alternative device, as no known countermeasures or patches currently exist. Additionally, restricting or blocking HTTP POST requests to the /boafrm/formDMZ endpoint via firewall rules or network segmentation can reduce exposure. Monitoring and blocking suspicious traffic targeting this endpoint is recommended until a firmware update or patch is available. [2]