CVE-2025-14964
Unknown Unknown - Not Provided
Remote Stack-Based Buffer Overflow in TOTOLINK T10 CGI Function

Publication date: 2025-12-19

Last updated on: 2025-12-19

Assigner: VulDB

Description
A vulnerability has been found in TOTOLINK T10 4.1.8cu.5083_B20200521. This affects the function sprintf of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument loginAuthUrl leads to stack-based buffer overflow. The attack may be performed from remote.
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Meta Information
Published
2025-12-19
Last Modified
2025-12-19
Generated
2026-06-16
AI Q&A
2025-12-19
EPSS Evaluated
2026-06-15
NVD
CVE-2025-14964
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
totolink t10 4.1.8cu.5083_b20200521
Helpful Resources
Exploitability
CWE
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KEV
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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).
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Executive Summary

This vulnerability is a stack-based buffer overflow in the TOTOLINK T10 router firmware version 4.1.8cu.5083_B20200521. It occurs in the sprintf function within the /cgi-bin/cstecgi.cgi file when processing the loginAuthUrl parameter. An attacker can send a specially crafted HTTP login request that causes excessive input to be copied into a fixed-size stack buffer without proper bounds checking, leading to memory corruption. This can be exploited remotely without authentication. [1, 2]

Impact Analysis

The vulnerability can lead to memory corruption resulting in denial of service or potentially remote code execution on the affected device. It impacts the confidentiality, integrity, and availability of the TOTOLINK T10 router. Since it can be exploited remotely without authentication, attackers can compromise the device, disrupt its operation, or take control of it. [1, 2]

Detection Guidance

This vulnerability can be detected by monitoring HTTP requests to the TOTOLINK T10 router's web management interface, specifically looking for requests to /cgi-bin/cstecgi.cgi with the parameter loginAuthUrl containing unusually long or crafted input that could trigger a buffer overflow. Since the vulnerability is triggered by the 'action=login' parameter with manipulated 'loginAuthUrl', inspecting HTTP traffic for such patterns may help detect exploitation attempts. However, no specific detection commands or signatures are provided in the available resources. [1, 2]

Mitigation Strategies

Immediate mitigation steps include replacing the affected TOTOLINK T10 router firmware version 4.1.8cu.5083_B20200521 with a secure version or a different product, as no known countermeasures or patches are currently available. Avoid exposing the device's web management interface to untrusted networks and restrict remote access to reduce the risk of exploitation. [2]

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