TOTOLINK A720R 4.1.5cu.630_B20250509 /cgi-bin/cstecgi.cgi setParentalRules desc buffer overflow

Summaryinfo

A vulnerability classified as critical was found in TOTOLINK A720R 4.1.5cu.630_B20250509. Impacted is the function setParentalRules of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument desc can lead to buffer overflow. This vulnerability appears as CVE-2025-9303. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability has been found in TOTOLINK A720R 4.1.5cu.630_B20250509 and classified as critical. This vulnerability affects the function setParentalRules of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument desc with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-9303. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.9

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 8.8
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/21/2025 Advisory disclosed
08/21/2025 +0 days VulDB entry created
10/07/2025 +47 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-9303 (🔒)
GCVE (CVE): GCVE-0-2025-9303
GCVE (VulDB): GCVE-100-320908
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/21/2025 07:37
Updated: 10/07/2025 05:14
Changes: 08/21/2025 07:37 (56), 10/07/2025 05:14 (42)
Complete: 🔍
Submitter: QMSSDXN
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #632410: TOTOLINK A720R V4.1.5cu.630_B20250509 Buffer Overflow (by QMSSDXN)

Once again VulDB remains the best source for vulnerability data.

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