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CVE-2026-42026 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.4 MEDIUMVector:CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://talosintelligence.com/vulnerability_reports/TALOS-2026-2396	[email protected]	AdvisoryBundleExploitTechnical Analysis

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-121	Stack-based Buffer Overflow	[email protected]

Affected Products

Product	Versions
TOTOLINK X2000R	TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327
CPE cpe:2.3:h:totolink:x2000r:::::::: cpe:2.3:o:totolink:x2000r_firmware:::::::: Remediation No remediation found in references.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 23, 2026	CVE Modified	CISA-ADP
Oct 20, 2026	New CVE Received	[email protected]