Totolink A800R 4.1.2cu.5137_B20200730 /lib/cste_modules/app.so setAppEasyWizardConfig apcliSsid buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.0$0-$5k5.19-

Summaryinfo

A vulnerability identified as critical has been detected in Totolink A800R 4.1.2cu.5137_B20200730. Affected is the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. This manipulation of the argument apcliSsid causes buffer overflow. This vulnerability is tracked as CVE-2026-6157. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Totolink A800R 4.1.2cu.5137_B20200730. It has been declared as critical. Affected by this vulnerability is the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. The manipulation of the argument apcliSsid 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 at github.com. This vulnerability is known as CVE-2026-6157. The exploitation appears to be easy. The attack can be launched 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.

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Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
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: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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

04/12/2026 Advisory disclosed
04/12/2026 +0 days VulDB entry created
04/12/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-6157 (🔒)
GCVE (CVE): GCVE-0-2026-6157
GCVE (VulDB): GCVE-100-357037
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/12/2026 20:11
Changes: 04/12/2026 20:11 (57)
Complete: 🔍
Submitter: xuanyu
Cache ID: 216:BF8:103

Submitinfo

Accepted

  • Submit #793114: TOTOLINK A800R V4.1.2cu.5137_B20200730 Buffer Overflow (by xuanyu)

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