Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version(s): 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 dhcp_dns2 parameter.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
totolink Totolink unaffected
Version Status Constraints
TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 affected —

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://talosintelligence.com/vulnerability_reports/TALOS-2026-2396 cve-icon cve-icon
History

Tue, 20 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Title Stack-based Buffer Overflow in Totolink X2000R DHCP DNS Functionality

Tue, 20 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Description Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version(s): 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 dhcp_dns2 parameter.
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: talos

Published:

Updated: 2026-10-20T20:25:23.155Z

Reserved: 2026-04-23T14:20:27.853Z

Link: CVE-2026-42026

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-20T21:17:19.730

Modified: 2026-10-20T21:17:19.730

Link: CVE-2026-42026

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T22:15:07Z

Weaknesses