CVE-2025-9781

A vulnerability has been found in TOTOLINK A702R 4.0.0-B20211108.1423. This affects the function sub_4162DC of the file /boafrm/formFilter. Such manipulation of the argument ip6addr leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formFilter/formFilter.md	Broken Link
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formFilter/formFilter.md#poc	Broken Link
https://vuldb.com/?ctiid.322083	Permissions Required
https://vuldb.com/?id.322083	Third Party Advisory VDB Entry
https://vuldb.com/?submit.640989	Third Party Advisory VDB Entry
https://www.totolink.net/	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:a702r_firmware:4.0.0-b20211108.1423:*:*:*:*:*:*:*

cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:*

History

26 Sep 2026, 00:10

Type	Values Removed	Values Added
Summary		(es) Se ha encontrado una vulnerabilidad en TOTOLINK A702R 4.0.0-B20211108.1423. Esto afecta a la función sub_4162DC del archivo /boafrm/formFilter. Dicha manipulación del argumento ip6addr conduce a un desbordamiento de búfer. El ataque puede lanzarse remotamente. El exploit se ha divulgado al público y puede utilizarse.

Information

Published : 2025-09-01 14:15

Updated : 2026-09-26 00:10

NVD link : CVE-2025-9781

Mitre link : CVE-2025-9781

CVE.ORG link : CVE-2025-9781

JSON object : View

Products Affected

totolink

a702r
a702r_firmware

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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