TOTOLINK N600R 4.3.0cu.7866_B20220506 cstecgi.cgi sub_4159F8 command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This issue affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. The manipulation leads to command injection. This vulnerability is uniquely identified as CVE-2025-9935. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This issue affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-9935. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

The exploit is available 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

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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: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 7.3
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
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

09/03/2025 Advisory disclosed
09/03/2025 +0 days VulDB entry created
09/30/2025 +27 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-9935 (🔒)
GCVE (CVE): GCVE-0-2025-9935
GCVE (VulDB): GCVE-100-322337
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/03/2025 13:39
Updated: 09/30/2025 02:10
Changes: 09/03/2025 13:39 (55), 09/04/2025 15:45 (30), 09/30/2025 02:10 (11)
Complete: 🔍
Submitter: b55t4ck
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #643088: Shenzhen Shengshi Zhongtang Technology Co., Ltd..(TOTOLINK) TOTOLINK N600R V4.3.0cu.7866_B20220506 Unauthorized Command Injection (by b55t4ck)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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