CVE-2014-125122
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-07-31

Last updated on: 2025-07-31

Assigner: VulnCheck

Description
A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset the administrator password of the device to a blank value. This grants unauthorized access to the router’s web management interface without requiring valid credentials.
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Meta Information
Published
2025-07-31
Last Modified
2025-07-31
Generated
2026-05-07
AI Q&A
2025-07-31
EPSS Evaluated
2026-05-05
NVD
EUVD
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linksys wrt120n 1.0.7
linksys wrt120n 1.0.0.7
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
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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).
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a stack-based buffer overflow in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. It occurs when an attacker sends a specially crafted HTTP POST request with an overly long TM_Block_URL parameter. Exploiting this flaw allows an unauthenticated remote attacker to overwrite memory in a controlled way, temporarily resetting the administrator password to a blank value and gaining unauthorized access to the router's web management interface without valid credentials.


How can this vulnerability impact me? :

The vulnerability can impact you by allowing an unauthenticated remote attacker to gain unauthorized access to your router's web management interface. This access is achieved by resetting the administrator password to a blank value, which could lead to unauthorized changes to your router's configuration, potential network compromise, and loss of control over your device.


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