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CVE-2026-41223

9.1 CRITICAL

Published 2026-10-20 · Updated 2026-10-22

AI risk analysis

Summary
A stack-based buffer overflow in the formMapDelDevice macstr function of X2000R firmware allows authenticated attackers to execute arbitrary code by sending a specially crafted HTTP request that overflows a local buffer on the stack.
Exploitability
Exploitation requires valid authentication and sending a single malicious HTTP request; no user interaction is needed.
Blast radius
Successful exploitation grants full system compromise (confidentiality, integrity, and availability) due to remote code execution with likely root privileges.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 or later, as this is the only fixed version referenced in the description.
rcebuffer-overflowauth-requiredweb-appembedded-device

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

A stack-based buffer overflow vulnerability exists in the boa formMapDelDevice macstr 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 this vulnerability.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-121

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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