CVE-2025-9303

A security flaw has been discovered in TOTOLINK A720R 4.1.5cu.630_B20250509. This issue affects the function setParentalRules of the file /cgi-bin/cstecgi.cgi. Performing manipulation of the argument desc results in buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be exploited.

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/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md	Exploit Third Party Advisory
https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md#poc	Exploit Third Party Advisory
https://vuldb.com/?ctiid.320908	Permissions Required VDB Entry
https://vuldb.com/?id.320908	Third Party Advisory VDB Entry
https://vuldb.com/?submit.632410	Third Party Advisory VDB Entry
https://www.totolink.net/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.630_b20250509:*:*:*:*:*:*:*

cpe:2.3:h:totolink:a720r:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-08-21 15:15

Updated : 2025-10-06 18:48

NVD link : CVE-2025-9303

Mitre link : CVE-2025-9303

CVE.ORG link : CVE-2025-9303

JSON object : View

Products Affected

totolink

a720r_firmware
a720r

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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