CVE-2026-42025 Details
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_dns1 parameter.
Multiple stack-based buffer overflow vulnerabilities have been identified in the Totolink X2000R router, specifically in the DHCP DNS configuration section of the web administration interface. These vulnerabilities arise from the boa web server's handling of HTTP POST parameters, particularly 'dhcp_dns1' and 'dhcp_dns2', which are copied to the stack without proper validation. This lack of oversight creates an opportunity for authenticated attackers to craft HTTP requests that exploit these vulnerabilities, potentially leading to arbitrary code execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 23, 2026References 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
Remediation
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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] |