TOTOLINK N600R 4.3.0cu.7866_B20220506 Authentication cstecgi.cgi loginAuth random values

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k1.30+

Summaryinfo

A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506 and classified as problematic. This issue affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Performing a manipulation results in random values. This vulnerability is identified as CVE-2026-82555. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. The manipulation with an unknown input leads to a random values vulnerability. CWE is classifying the issue as CWE-330. The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. This is going to have an impact on confidentiality.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-82555. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK.

The exploit is shared for download 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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Random values
CWE: CWE-330 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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

08/29/2026 Advisory disclosed
08/29/2026 +0 days VulDB entry created
08/29/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-82555 (🔒)
GCVE (CVE): GCVE-0-2026-82555
GCVE (VulDB): GCVE-100-397071
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/29/2026 21:00
Changes: 08/29/2026 21:00 (56)
Complete: 🔍
Submitter: bluerry
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #891698: TOTOLINK N600R v4.3.0cu.7866_B20220506 Use of Insufficiently Random Values (by bluerry)

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