CVE-2025-9357
BaseFortify
Publication date: 2025-08-23
Last updated on: 2025-09-02
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linksys | re6250_firmware | 1.0.04.001 |
| linksys | re6250 | * |
| linksys | re6300_firmware | 1.2.07.001 |
| linksys | re6300 | * |
| linksys | re6350_firmware | 1.0.04.001 |
| linksys | re6350 | * |
| linksys | re7000_firmware | 1.1.05.003 |
| linksys | re7000 | * |
| linksys | re9000_firmware | 1.0.04.002 |
| linksys | re9000 | * |
| linksys | re6500_firmware | 1.0.013.001 |
| linksys | re6500 | * |
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?
CVE-2025-9357 is a stack-based buffer overflow vulnerability in multiple Linksys range extender models. It occurs in the langSwitchByBBS function of the /goform/langSwitchByBBS file, where the langSelectionOnly parameter can be manipulated by an attacker. If an attacker sends excessively long input to this parameter, it causes a stack overflow, which can crash the device or allow remote code execution. The vulnerability is remotely exploitable and an exploit is publicly available. [1, 2]
How can this vulnerability impact me? :
This vulnerability can severely impact affected devices by allowing remote attackers to crash the device or execute arbitrary code, compromising the confidentiality, integrity, and availability of the device. This can lead to unauthorized control over the device, disruption of network services, and potential further attacks within the network. [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 network traffic for HTTP requests targeting the /goform/langSwitchByBBS endpoint with unusually long or crafted langSelectionOnly parameters, which may indicate exploitation attempts. Since the exploit involves sending crafted requests to this endpoint, inspecting logs or using network intrusion detection systems (NIDS) with signatures for such requests can help detect it. Specific commands might include using curl or wget to test the endpoint manually, for example: curl -v --data "langSelectionOnly=AAAA..." http://<router-ip>/goform/langSwitchByBBS, where the parameter is excessively long to test for overflow behavior. Additionally, network monitoring tools like tcpdump or Wireshark can be used to capture and analyze suspicious traffic to this endpoint. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected Linksys devices (RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 with vulnerable firmware versions) with alternative products, as no vendor patches or mitigations are available. Network administrators should restrict remote access to these devices, disable remote management if possible, and monitor for exploitation attempts. Applying network-level protections such as firewall rules to block access to the /goform/langSwitchByBBS endpoint or filtering suspicious traffic can also help reduce risk. [2]