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.
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

06 Oct 2025, 18:48

Type Values Removed Values Added
CPE cpe:2.3:h:totolink:a720r:-:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.630_b20250509:*:*:*:*:*:*:*
First Time Totolink
Totolink a720r
Totolink a720r Firmware
References () https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md - () https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md - Exploit, Third Party Advisory
References () https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md#poc - () https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md#poc - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.320908 - () https://vuldb.com/?ctiid.320908 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.320908 - () https://vuldb.com/?id.320908 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.632410 - () https://vuldb.com/?submit.632410 - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Third Party Advisory, VDB Entry

22 Aug 2025, 18:09

Type Values Removed Values Added
Summary
  • (es) Se ha descubierto una falla de seguridad en TOTOLINK A720R 4.1.5cu.630_B20250509. Este problema afecta a la función setParentalRules del archivo /cgi-bin/cstecgi.cgi. La manipulación del argumento desc provoca un desbordamiento del búfer. El ataque puede ejecutarse en remoto. Se ha hecho público el exploit y puede que sea utilizado.

21 Aug 2025, 15:15

Type Values Removed Values Added
New CVE

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
  • a720r_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')