What’s Vulnerable › Vulnerabilities

CVE-2026-42020

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-28
• Weakness: CWE-121

Description

Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup pppoe 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 pppoe_dns2 parameter.

Affected products

• Totolink: TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2026-2394

Get alerted when CVE-2026-42020 or the next vulnerability affects your stack