What is GHSA-9hw7-42mj-hjfc?

GHSA-9hw7-42mj-hjfc is a security advisory published by GitHub Security Advisories with Critical severity. Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static...

Which CVE IDs does GHSA-9hw7-42mj-hjfc cover?

GHSA-9hw7-42mj-hjfc covers the following CVE IDs: CVE-2026-42021. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9hw7-42mj-hjfc?

GHSA-9hw7-42mj-hjfc has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-9hw7-42mj-hjfcCriticalCVSS 9.1

Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static...

Vendor

GitHub Security Advisories

Published

October 20, 2026

Last Modified

October 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-42021 →

📋 Description

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_dns1 parameter.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-42021
https://talosintelligence.com/vulnerability_reports/TALOS-2026-2395
https://github.com/advisories/GHSA-9hw7-42mj-hjfc