CVE-2025-8831
BaseFortify
Publication date: 2025-08-11
Last updated on: 2025-09-04
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-2025-8831 is a stack-based buffer overflow vulnerability found in several Linksys range extender models (RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000). The flaw exists in the remoteManagement function, specifically in the handling of the portNumber argument. An attacker can supply a crafted, excessively long portNumber value that causes a stack overflow, potentially allowing remote attackers to crash the device or execute arbitrary code without authentication. [1, 2]
How can this vulnerability impact me? :
This vulnerability can severely impact affected devices by allowing remote attackers to cause a denial of service (crash the device) or execute arbitrary code, which can compromise the confidentiality, integrity, and availability of the device. Since the exploit is remotely accessible without authentication and is easy to exploit, attackers can take control of the device or disrupt its operation, leading to potential network security breaches. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection can be performed by monitoring network traffic for suspicious requests to the /goform/remoteManagement endpoint, specifically those manipulating the portNumber parameter with unusually long or malformed input that could trigger the stack-based buffer overflow. Since the exploit is remotely accessible without authentication, scanning for HTTP POST requests to /goform/remoteManagement with abnormal portNumber values may indicate attempts to exploit this vulnerability. No specific detection commands are provided in the resources, but using tools like curl or custom scripts to send crafted requests and observe device behavior could help identify vulnerable devices. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include discontinuing the use of affected Linksys range extender models (RE6250, RE6300, RE6350, RE6500, RE7000, RE9000) running vulnerable firmware up to 20250801, as no vendor patches or mitigations are available. Consider replacing these devices with alternative products not affected by this vulnerability. Additionally, restrict remote management access to trusted networks only or disable remote management if possible to reduce exposure. Monitoring for exploit attempts and isolating vulnerable devices from untrusted networks can also help mitigate risk. [2]