TOTOLINK T6 4.1.5cu.748 Wi-Fi Scheduling /cgi-bin/cstecgi.cgi getApWiFiSchCfg access control

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k1.12

Summaryinfo

A vulnerability, which was classified as problematic, has been found in TOTOLINK T6 4.1.5cu.748. Affected by this vulnerability is the function getApWiFiSchCfg of the file /cgi-bin/cstecgi.cgi of the component Wi-Fi Scheduling. The manipulation leads to access control. This vulnerability is listed as CVE-2026-51639. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in TOTOLINK T6 4.1.5cu.748. This issue affects the function getApWiFiSchCfg of the file /cgi-bin/cstecgi.cgi of the component Wi-Fi Scheduling. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality. The summary by CVE is:

Incorrect access control in the getApWiFiSchCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain AP-specific Wi-Fi scheduling rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

It is possible to read the advisory at totolink.net. The identification of this vulnerability is CVE-2026-51639 since 06/08/2026. 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 of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/28/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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

06/08/2026 CVE reserved
08/28/2026 +81 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
08/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: totolink.net
Status: Not defined

CVE: CVE-2026-51639 (🔒)
GCVE (CVE): GCVE-0-2026-51639
GCVE (VulDB): GCVE-100-396803

Entryinfo

Created: 08/28/2026 21:58
Changes: 08/28/2026 21:58 (54)
Complete: 🔍
Cache ID: 216::103

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