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A702r Firmware CVE-2025-6940

| EUVD-2025-19600 HIGH
Buffer Overflow (CWE-119)
2025-07-01 cna@vuldb.com
Buffer Overflow A702r Firmware TOTOLINK
8.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
EUVD ID Assigned
Mar 16, 2026 - 01:42 euvd
EUVD-2025-19600
Analysis Generated
Mar 16, 2026 - 01:42 vuln.today
PoC Detected
Jul 07, 2025 - 14:41 vuln.today
Public exploit code
CVE Published
Jul 01, 2025 - 03:15 nvd
HIGH 8.8

DescriptionNVD

A vulnerability classified as critical was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Analysis

A vulnerability classified as critical was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Technical ContextAI

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state.

RemediationAI

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

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CVE-2025-6940 vulnerability details – vuln.today
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