CVE-2026-40615

CRITICAL 9.1

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

A stack-based buffer overflow vulnerability exists in the boa formParentControl deviceName 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.

CWE	CWE-121
Vendor	totolink
Product	totolink
Published	Oct 20, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

totolink / Totolink

TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

References

NVD ↗ CVE.org ↗ EPSS Data ↗

talosintelligence.com: https://talosintelligence.com/vulnerability_reports/TALOS-2026-2393

Credits

Discovered by Lilith Wyatt of Cisco Talos