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CVE-2026-9660

CRITICAL(9.1)

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

Risk Signal Score28/100 — MITTEL
  • CVSS 9.1 — Kritisch

EPSS-Score

0.8%

Exploit-Wahrscheinlichkeit (30 Tage)

CVSS Score

9.1

Technische Schwere

Beschreibung

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 vpnPassword parameter.

Erkennung & Indikatoren

Ausnutzung

In den geprüften Quellen nicht genannt

Threat-Hunting-Queries

Sentinel/Defender KQL

DeviceNetworkEvents
| where ActionType == "HttpRequest" and RemoteUrl contains "/boafrm/formFilter" and RemoteUrl contains "vpnPassword="
| where isnotempty(RemoteIP) and isnotempty(RemotePort)
| summarize count() by DeviceName, RemoteIP, RemotePort, RemoteUrl
| where count_ > 5 // Adjust threshold as needed for your environment
| project DeviceName, RemoteIP, RemotePort, RemoteUrl, count_

Splunk SPL

sourcetype=weblogs uri_path="/boafrm/formFilter" uri="*vpnPassword=*" | stats count by host, clientip, uri | where count > 5

Sigma

title: Totolink X2000R formFilter Buffer Overflow Attempt
id: 00000000-0000-0000-0000-000000000000
status: experimental
description: Detects attempts to exploit stack-based buffer overflow in Totolink X2000R via formFilter functionality.
references:
  - https://talosintelligence.com/vulnerability_reports/TALOS-2026-2425
author: SecBoard
date: 2026/10/20
logsource:
  category: webserver
  product: generic
detection:
  selection:
    c-uri|contains_all:
      - '/boafrm/formFilter'
      - 'vpnPassword='
  condition: selection
falsepositives:
  - Legitimate administrative requests with unusually long vpnPassword parameters (unlikely).
level: high

Elastic ES|QL

from logs-webserver-apache.access-*
| where url.path : "/boafrm/formFilter" and url.query : "*vpnPassword=*"
| summarize doc_count() by host.name, client.ip, url.original
| where doc_count > 5

SecBoard-generated · behavioral · requires customization — Von SecBoard erzeugt und nicht in einer Zielumgebung validiert. Vor dem Einsatz an die eigene Protokollierung anpassen.

Indikatoren

Domains (2)

  • www.totolink.net
  • talosintelligence.com

Übernommen wurden nur Indikatoren, die wörtlich in einer Hersteller- oder Research-Quelle standen.

Referenzen