CVE-2026-9659

Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formFilter 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 deals with the vpnUser parameter.

Score

CVSS 3.1 9.1 Critical

Status

Deferred - talos-cna@cisco.com

Published

2026-10-20

Last modified

2026-10-28

Weaknesses

CWE-121

Affected products

• Totolink (Totolink)

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2026-2425