Paper/Archive/CVE-2026-42026

CVE-2026-42026

totolink Totolink — Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version…

EPSS 0.5%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (CNA)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 43.6.436 × 208.7 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

TotolinkTOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327–CNA

Scores by source

talos (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

reftalosintelligence.com/vulnerability_reports/TALOS-2026-2396