CVE-2026-2187

HIGH
2026-02-08 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Feb 10, 2026 - 14:54 vuln.today
Public exploit code
CVE Published
Feb 08, 2026 - 21:15 nvd
HIGH 8.8

Description

A vulnerability was found in Tenda RX3 16.03.13.11. The affected element is the function set_qosMib_list of the file /goform/formSetQosBand. Performing a manipulation of the argument list results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used.

Analysis

Stack-based buffer overflow in Tenda RX3 firmware 16.03.13.11 allows remote attackers with low privileges to achieve complete system compromise through manipulation of QoS parameters. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Remediation

Within 24 hours: Inventory all Tenda RX3 devices running firmware 16.03.13.11 and isolate them from critical network segments; disable QoS configuration features if possible via device settings. Within 7 days: Implement network segmentation to restrict administrative access to affected devices; deploy WAF/IPS rules to block exploitation attempts on port 80/443 targeting /goform/formSetQosBand; consider replacing devices with patched alternatives or alternate vendors. …

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Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +44
POC: +20

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CVE-2026-2187 vulnerability details – vuln.today

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