Totolink TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 Static Network Configuration formIpv6Setup static_ipv6 stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.1$0-$5k0.80

Summaryinfo

A vulnerability marked as very critical has been reported in Totolink TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. Affected is the function formIpv6Setup of the component Static Network Configuration. Performing a manipulation of the argument static_ipv6 results in stack-based overflow. This vulnerability is identified as CVE-2026-42023. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as very critical has been found in Totolink TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. This affects the function formIpv6Setup of the component Static Network Configuration. The manipulation of the argument static_ipv6 with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configuration functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the static_ipv6 parameter.

It is possible to read the advisory at talosintelligence.com. This vulnerability is uniquely identified as CVE-2026-42023 since 04/23/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. 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 10/21/2026).

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

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 9.1
VulDB Temp Score: 9.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.1
CNA Vector (talos): 🔒

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
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

04/23/2026 CVE reserved
10/21/2026 +181 days Advisory disclosed
10/21/2026 +0 days VulDB entry created
10/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: talosintelligence.com
Status: Not defined

CVE: CVE-2026-42023 (🔒)
GCVE (CVE): GCVE-0-2026-42023
GCVE (VulDB): GCVE-100-424071

Entryinfo

Created: 10/21/2026 05:28
Changes: 10/21/2026 05:28 (62)
Complete: 🔍
Cache ID: 216::103

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

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